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Over [174]
3 years ago
9

State whether the decay is linear or​ exponential, and answer the associated question. The value of a car is decreasing by 9​% p

er year. If the car is worth ​$11 comma 000 ​today, what will it be worth in two​ years? g
Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

  • Exponential
  • A(2)=$9109.10

Step-by-step explanation:

Since the value of the car decreases by a common factor each year, the decay is exponential.

An exponential decay function is of the form

A(t)=A_0(1-r)^t$ where:\\Initial Value, A_0=\$11,000\\$Decay Factor, r=9%=0.09

Therefore, the function modeling the car's decay is:

A(t)=11000(1-0.09)^t

We want to determine the car's value in two years.

When t=2

A(2)=11000(1-0.09)^2\\A(2)=\$9109.10

The value of the car in 2 years will be A(t)=$9109.10

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(8x-7)+5 when x is 2<br><br>​
Irina-Kira [14]

Answer:

If X=2 then the equation would be solved starting with 8x2=16 then take 16 and subtract it by 7 which would equal 9, then you take 9 and add 5 to it and that would give you the answer of 14

Step-by-step explanation:

(8x-7)+5   x=2

(8x2-7)+5

(16-7)+5

9+5

<u>Answer 14</u>

I hope this helps you

4 0
3 years ago
Chandra has $36.25 in dimes and quarters If she has 250 coins in total, hwo many
vladimir2022 [97]

Answer:

175 dimes and 75 quarters

Step-by-step explanation:

Make a system of equations, where d is the number of dimes and q is the number of quarters:

d + q = 250

0.1d + 0.25q = 36.25

Solve by elimination by multiplying the top equation by -0.1:

-0.1d - 0.1q = -25

0.1d + 0.25q = 36.25

0.15q = 11.25

q = 75

Then, plug in 75 as q into one of the equations to solve for d:

d + q = 250

d + 75 = 250

d = 175

So, there are 175 dimes and 75 quarters

7 0
3 years ago
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A costumer placed an order with a bakery for muffins.The Baker has completed 37.5% of the order after baking 81 muffins. How man
Elza [17]
216 ? Maybe . I think you have to multiply 81 times .375 you move the decimal two places over . I believe that’s how you do the problem
5 0
3 years ago
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The scale in the drawing is 2in:4ft. What are the length and width of the actual room find the area of the actual room
Marizza181 [45]
1:24  get them each doqwn 1 inch 24 inche = 2 feet
6 0
3 years ago
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What is the answer to the length of a rectangle is 5 feet more then the width and the perimeter is 22 what is is width of the re
Margaret [11]
Question:
l = 5 + w
perimeter = 22
width?

Solution:
Perimeter = 22
2(l + w)     = 22
2(5+w+w) = 22
2 (5 + 2w) = 22
     5 + 2w = 11
           2w = 6
             w = 3

The width is 3
3 0
3 years ago
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