The amount of fertilizer in a landscaping company’s warehouse decreases at a rate of 3% per week. The amount of fertilizer in the warehouse was originally 78,000 cubic yards.

Which function models the amount of fertilizer in cubic yards left after w weeks?

f(w) = 78,000(1.03)^w

f(w) = 78,000(0.97)^w

f(w) = 1.03(78,000)^w

f(w) = 0.97(78,000)^w