Question

Phillip 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

C. 12%

1 - 0.88 = 0.12

Now while that may be one of the choices, that doesn't exactly describe what's going on. What we need to convert to a percentage:

0.12 → 12%

Answer 2

if I said I had .25 cents you would know I had a quarter of a dollar or 1/4th of a dollar, .25 cents could also be thought of as 25% of a dollar.

so in this case if the "dollar" is x and the "quarter" is .88 you could say you have 88% of x