Question

Leo bought a used car for x dollars. One year later the value of the car was 0.88x. Which expression is another way to describe the change in the value of the car?

Answer 1

it would be a 12% decrease. 0.88 is 88% (multiply by 100 to find the percentage) of the original price (x, which is 100%). as an example, say x=1000. 

0.88(1000)=880

880 is 88% of 1000, but the original price did not decrease by 88%/$880. Instead subtract this percentage from 100. 

100%-88%=12% 

there, you find the percentage lost/the percentage of the value decrease.

Answer 2

Another expression that can be used to describe the change in the value of the car is a 12% decrease.

What is the expression that can be used to describe the change in the value of the car?

Depreciation is when the value of an asset declines. The expression that canbe used to determine the rate of decline of an asset is:

Inital value of the car x (1 - rate of decline)

0.88x

Rate of decline = 1 - 0.88 = 12%

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