The price of bread went from $1.50 per loaf to $2.50 per loaf in four years. Find the rate of change of the price of bread. A) $0.15 per year B) $0.25 per year C) $0.55 per year D) $1.00 per year

QUESTION POSTED AT 26/03/2020 - 01:05 PM

Answered by admin AT 26/03/2020 - 01:05 PM

Take $1.50 from $2.50 and get $1.00 then divide it by 4 since that is the time period.

$1.00/4= $0.25

Therefore making your answer B.
Post your answer

Related questions

If Katie bought some flowers she use 3/8 of it to bake bread what percent of the flour is left

Eight minus three is five so 5/8.

ANSWERED AT 01/04/2020 - 01:48 PM


QUESTION POSTED AT 01/04/2020 - 01:48 PM

In one town, 39% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that they are both Democrats. Round to the nearest thousandth if necessary.

Answer:

The probability is 0.152

Step-by-step explanation:

We know that in this town 39% of all voters are Democrats. Therefore, the probability of a randomly selected voter being a Democrat is p=0.39

The experiment of randomly select voters for a survey is called a Bernoulli experiment (under some suppositions). We suppose that exist independence in this randomly selection of voters. We also suppose that there are only two possibilities for the voter : It is Democrat or not.

Now the variable X : ''The randomly selected voter for a survey is Democrat'' is a Binomial random variable.

X ~ Bi (n,p)

The probability function for the BInomial random variable X is :

P(X=x)=(nCx).p^{x}.(1-p)^{n-x}

Where ''n'' is the number of Bernoulli experiments (In this case n = 2 because we randomly selected two voters)

P(X=x) is the probability of the variable X to assumes the value x

(nCx) is the combinatorial number define as

(nCx)=\frac{n!}{x!(n-x)!}

p = 0.39 in this exercise.

We are looking for P(X=2) ⇒

P(X=2)=(2C2).(0.39)^{2}.(1-0.39)^{2-2}=(0.39)^{2}=0.1521

If we round to the nearest thousandth the probability is 0.152

ANSWERED AT 01/04/2020 - 01:48 PM


QUESTION POSTED AT 01/04/2020 - 01:48 PM

Find the volume of the cylinder. Round your answer to the nearest tenth

V = pi*(r^2)*h
V = pi*(7^2)*5
V = pi*(49)*5
V = 245pi ft^2
V = 796.7 ft^2

ANSWERED AT 01/04/2020 - 01:47 PM


QUESTION POSTED AT 01/04/2020 - 01:47 PM

An electric pump can fill a 45-gallon tub in half an hour.At this rate, how long would it take to fill a 60-gallon tub?

You can cross multiply to find the answer. Start by setting up your equation:

45/30 = 60/x  (30 represents half an hour)
Next, cross multiply, 45 times x, and 60 times 30: 

45x = 1800  you must isolate the "x" value by using the opposite operation it is involved in. Here we have 45x (x is multiplied to 45) so we must divide 45, which will cancel itself out, leaving us with "x."

What you do on one side of the equation, you must do on the other, so divide 1800 by 45 as well, which will leave you with 40.

Working it out on paper, your equation should now look like this: x=40, which represents the amount of time it will take to fill a 60 gallon tube.

Answer: It will take 40 minutes to fill a 60 gallon tube. 

ANSWERED AT 01/04/2020 - 01:47 PM


QUESTION POSTED AT 01/04/2020 - 01:47 PM

Find the volume of the cylinder. Round your answer to the nearest tenth

Answer. 42.41
Cylinder Equation: SA= 2× 3.14×r^2+2×3.14×r×h
Diameter of circle divided by 2 to get the radius =1.5
R= Radius
H=Height

ANSWERED AT 01/04/2020 - 01:46 PM


QUESTION POSTED AT 01/04/2020 - 01:46 PM

What is the sine ratio of angle E? A - 5/3 B - 3/5 C - 5/4 D - 4/5

Answer:

The correct option is B.

Step-by-step explanation:

In a right angled triangle

\sin \theta=\frac{perpendicular}{hypotenuse}=\frac{opposite}{hypotenuse}

In the given triangle DEF, the opposite sides of angle E is DF=6 units and hypotenuse EF=10 units.

The sine ratio of angle E is

\sin E=\frac{DF}{EF}

\sin E=\frac{6}{10}

\sin E=\frac{3}{5}

The sine ratio of angle E is 3/5, therefore the correct option is B.

ANSWERED AT 01/04/2020 - 01:46 PM


QUESTION POSTED AT 01/04/2020 - 01:46 PM

Bruce buys a trampoline prices at $54. if the sales tax is 3 2/5% how much tax will bruce pay

$1.836 round off to $1.84 tax on $54 product with tax of 3.4%

ANSWERED AT 01/04/2020 - 01:45 PM


QUESTION POSTED AT 01/04/2020 - 01:45 PM

What is -8 in the following sequence: 25, 17, 9, 1, -7... A-common difference. B- common ratio. C-initial value. D- ratio. Why?

Hello :
 -8 is  common ratio ( answer B) because m 
-8 =(-7)-(1) =(1)-(9) =(9)-(17) =(17)-(25)

ANSWERED AT 01/04/2020 - 01:43 PM


QUESTION POSTED AT 01/04/2020 - 01:43 PM

If a necklace was marked up to 400% and was originally $100 what was the original price

Well if the number is 100 dollars and it increases by four hundred percent it now costs 400 dollars. But if it was 100 dollars after the increase the original price was 25 dollars.

ANSWERED AT 01/04/2020 - 01:42 PM


QUESTION POSTED AT 01/04/2020 - 01:42 PM

Ishaan is 72 years old and William is 4 years old. How many years will it take until Ishaan is only 5 times as old as William?

72+x= 5(4+x) just solve for x 

ANSWERED AT 01/04/2020 - 01:42 PM


QUESTION POSTED AT 01/04/2020 - 01:42 PM

Find the area of a triangle when the base is 24 feet and one of the sides is 13 feet

The area of the triangle is 156ft.

ANSWERED AT 01/04/2020 - 01:39 PM


QUESTION POSTED AT 01/04/2020 - 01:39 PM

The cost of $500,000 worth of 30-year-term life insurance for Rico is $66.60 per month. If Rico's employer covers 90% of this cost, how much is deducted from Rico's gross income per year for life insurance? A.$59.94 B.$79.92 C.799.20 D.719.28

$79.92       is deducted from rico's gross income per year                                                                  

ANSWERED AT 01/04/2020 - 01:39 PM


QUESTION POSTED AT 01/04/2020 - 01:39 PM

Find the volume V or height H of the cylinder. Round your answer to the nearest tenth

X = multiplication
h = height
r^2 = radius squared

Formula of a cylinder: Pi x r^2 x height

So, if 176 = 3.14... times 4^2  times h
Then, 176 = 3.14 times 16h 
Next, 176 = 50.24h
Finally, 3.5 = h

You can then check your work by plugging 3.5 back in for the missing height and round to the nearest tenth. :) The answer should come out the same if done correctly.

ANSWERED AT 01/04/2020 - 01:39 PM


QUESTION POSTED AT 01/04/2020 - 01:39 PM

How can you use the information shown to find its perimeter?

Well u know the area is 35 in^2 and the length is 7in. Let x = width
7x = 35
x = 35/7
Perimeter = 7(2) + 2(35/7) --> 14 + 70/7 --> 14 + 10 = 24

ANSWERED AT 01/04/2020 - 01:38 PM


QUESTION POSTED AT 01/04/2020 - 01:38 PM

Find the volume V or height H of the cylinder. Round your answer to the nearest tenth

V=Bh
π r^2h
3.14(4)^2(15)
V= 753.6 ft^3

ANSWERED AT 01/04/2020 - 01:37 PM


QUESTION POSTED AT 01/04/2020 - 01:37 PM

Joshua has $1,000,278. Part A. He takes 12.90% out to buy something. How much money did he spend, and how much does he have left? Part B. Explain your answer

To get from percentage move the decimal over to the left by 2 and multiply by total money:
1,000,278 x 0.1290 = 129036.  This is how much he took out.  
How much he has left is just the initial amount minus this
1,000,278-129036 = 871242

ANSWERED AT 01/04/2020 - 01:37 PM


QUESTION POSTED AT 01/04/2020 - 01:37 PM

shoe salesman earns a commission of 30% of all shoe sales made. Yesterday he sold 3 pairs of shoes for $70 each and 2 pairs of shoes for $80 each. How much did he earn in commission yesterday? A. $111 B. $30 C. $42 D. $32

Answer:

$111 is earn by shoe salesman as commission .

Option (A) is correct .

Step-by-step explanation:

As given the statement in the question be as follow.

Shoes salesman sold 3 pairs of shoes for $70 each and 2 pairs of shoes for $80 each.

Thus

Total cost of the pair of shoes = 3 × 70 + 2 × 80

                                                  = 210 + 160

                                                  = $ 370

As given

shoe salesman earns a commission of 30% of all shoe sales made.

30% is written is decimal form

= \frac{30}{100}

= 0.30

Commission earns = 0.30 × Total cost of the pair of shoes .

                               = 0.30 × 370

                               = $ 111

Therefore $111 is earn by shoe salesman as commission .

Option (A) is correct .

ANSWERED AT 01/04/2020 - 01:36 PM


QUESTION POSTED AT 01/04/2020 - 01:36 PM

Whats the unit rate of 6 for 36.00 dollars?

If 6 items cost 36 dollars and x represents 1 item then:
x + x + x + x + x +x = 36
or
6x = 36
x = 6

ANSWERED AT 01/04/2020 - 01:36 PM


QUESTION POSTED AT 01/04/2020 - 01:36 PM

A line passes through the points (4, 19) and (9, 24) write a linear function in the form y=mx+b for this line

I'm not sure of the b but y=1x+15 but my y-intercept is possibly wrong

ANSWERED AT 01/04/2020 - 01:34 PM


QUESTION POSTED AT 01/04/2020 - 01:34 PM

Factor completely 5c^5+60c^4+180c^3

5c^3(c^2 + 12c + 36) --> 5c^3(c+6)(c+6) --> 5c^3(c+6)^2

ANSWERED AT 01/04/2020 - 01:31 PM


QUESTION POSTED AT 01/04/2020 - 01:31 PM

How many multiples of 5 are there between 199 and 1,198? Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference.

An=a1+d (n-1)
A1=200 since that's the first term that can be a multiple of 5
N=? That's what we need to find
An=1195 since that's the last multiple of 5 that we can use
D=5
Plug in
1195=200+5 (n-1)
-200 both sides
995=5 (n-1)
Distribute 5 to n-1
995=5n-5
+5 both sides
1000=5n
÷5 both sides
N=200 there are 200 multiples of 5 in between 199 and 1198

ANSWERED AT 01/04/2020 - 01:30 PM


QUESTION POSTED AT 01/04/2020 - 01:30 PM

Which statements describe the graph of y = 4x2 + 28x + 49? Check all that apply. The graph has two x-intercepts because 4x2 + 28x + 49 has two different factors. The equation 2x + 7 = 0 can be used to find a zero of the function. The equation (2x – 7)2 = 0 can be used to find the y-intercept. The graph has a double root at x = . The graph intersects the y-axis at y = 49.

The graph has two x-intercepts because 4x2 + 28x + 49 has two different factors.FALSEThe equation 2x + 7 = 0 can be used to find a zero of the functionTRUE.The equation (2x – 7)2 = 0 can be used to find the y-intercept.FALSEThe graph has a double root at x = .TRUEThe graph intersects the y-axis at y = 49. TRUE

ANSWERED AT 01/04/2020 - 01:30 PM


QUESTION POSTED AT 01/04/2020 - 01:30 PM

Can someone help me to find this

Lol i learned that today sorry i didn't get it either

ANSWERED AT 01/04/2020 - 01:30 PM


QUESTION POSTED AT 01/04/2020 - 01:30 PM

Find the original price of a pair of shoes if the sale price is $52 after a $20 discount

$72 since the discount was $20 off, so the original price would be $52 + $20, which is $72.

ANSWERED AT 01/04/2020 - 01:28 PM


QUESTION POSTED AT 01/04/2020 - 01:28 PM

At 1 pm the shadow of a tree is 14 feet long. At the same time the shadow of a 18 foot telephone pole is 21 feet long. What is the height of the tree? A) 9 feet B) 12 feet C) 18 feet D) 22 feet

All you need to do is cross multiply and it gives you the answer of 12 feet

ANSWERED AT 01/04/2020 - 01:26 PM


QUESTION POSTED AT 01/04/2020 - 01:26 PM