Question

The amount of fertilizer in a landscaping company's warehouse decreases at a rate of 2% per week. The amount of fertilizer in the warehouse was originally, 64,000 cubic yards. Which function models the amount of fertilizer in cubic yards left after w weeks?

(1 point)

f(w)=64,000(1.02)w


f(w)=64,000(1.98)w


f(w)=0.98(64000)w


f(w)=64,000(0.98)w

Answer 1

Exponential decay with factor 1 − 0.02 = 0.98 each week. So

f(w) = 64,000(0.98)^w.

That's the fourth choice.