Williams Alexander

12/16/2023 · Senior High School

A retail store estimates that weekly sales \( s \) and weekly advertising costs \( x \) (both in dollars) are related by \( s=80,000-50,000 e^{-0.00025 x} \). The current weekly advertising costs are \( \$ 4,000 \), and these costs are increasing at a rate of \( \$ 240 \) per week. Find the current rate of change of sales. The current rate of change of sales is \( \$ \square \) per week. (Round to the nearest dollar as needed.)