The quantity (in pounds) of a gourmet ground coffee that is sold by a coffee company at a price of p dollars per pound is q = f(p). (a) what is the meaning of the derivative f '(4)? the rate of change of the price per pound with respect to the quantity of coffee sold when the price is $4 per pound. the rate of change of the quantity of coffee sold with respect to the price per pound when the price is $4 per pound. the rate of change of the price per pound with respect to the quantity of coffee sold. the supply of coffee needed to be sold to charge $4 per pound. the price of the coffee as a function of the supply. correct: your answer is correct. what are the units of f '(4)? pounds/(dollars/pound) pounds/dollar pounds dollars/pound dollars/(pound/pound) dollars changed: your submitted answer was incorrect. your current answer has not been submitted.