The profit from the supply of a certain commodity is modeled as P(q)=77qe-0.59 dollars where q is the number of units produced. (a) Write an expression for the rate of change of profit. P'(a) = dollars per unit (b) At what production level is the rate of change of profit zero? 9 = units (c) What is profit at the production level found in part (b)? (Round your answer to two decimal places.) $ Need Help? Read It