Emilia Wong

Mathematics

24 December, 12:26

12 Marc bought a new laptop for $1250. He kept track of the value of

the laptop over the next three years, as shown in the table below.

Years After Purchase

1

2

3

Value in Dollars

1000

800

640

Which function can be used to determine the value of the laptop for

years after the purchase?

(1) fx) = 1000 (1.2)

(3) fx) = 1250 (1.2)

(2) f (x) = 1000 (0.8)

(4) fx) = 1250 (0.8)