Mia bought a used car for $9,500. It is expected that the value of the car will decrease by an average of $750 each year. Which function can be used to find the
value of the car in x years after Mia purchased it?
A. f(x)=95000-750x
B. f(x)=95000+750x
C. f(x)=-750(x+9500)
D. f(x)=-9500(x-750)

I believe the answer is D

Step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870