Question

Jim buys a skateboard for $200. The value of the skateboard depreciates by 15% each year

since buying it. Create a function to represent the value of the skateboard, f(2), in dollars,
after 3 years since buying it.

Answer 1

Answer: f(x)=200•(0.85)^x

Explanation:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

Depreciation is often modeled as an exponential decay function. Since Jim bought a skateboard for Co=$200, its value will depreciate by r=15% = 0.15 each year since buying it.