If a company charges a price p for a product, then it can sell 3e^-p thousand units of the product. Then, f (p) = 3,000pep is the company’s revenue if it charges a price p.

1 For what values of p is f (p) decreasing? For what values of p is f (p) increasing?

2 Suppose the current price is $4 and the company increases the price by 5¢. By approximately how much would the company’s revenue change?