Please help with these two problems asap

Suppose customers in a hardware store are willing to buy N(p) boxes of nails at p dollars per box, as given by the following function. N(p) = 80-3p; 1ps4 a. Find the average rate of change of demand for a change in price from $2 to $3. The average rate of change of demand for a change in price from $2 to $3 is boxes per dollar. (Type an integer or a decimal.) b. Find the instantaneous rate of change of demand when the price is $2. boxes per dollar. The instantaneous rate of change of demand when the price is $2 is (Type an integer or a decimal.) c. Find the instantaneous rate of change of demand when the price is $3. boxes per dollar. The instantaneous rate of change of demand when the price is $3 is (Type an integer or a decimal.) The graphing calculator window shows the graph of a function f(x) and its derivative function f'(x). Decide which is the graph of the function and which is the graph of the derivative. Choose the graph that is the function and the graph that is the derivative. Y is the graph of the derivative. 1 Y is the graph of the function. Y2 is the graph of the derivative. Y is the graph of the function. X2 +