Find an expression for the prot function given the demand function 20 + P= 18 24 and the average cost function AC -= E + 2 a) Find the "values of Q for which the rm breaks even. b) Find the value of Q for which the rm maximises prot. The prot function is 2:: D (Simplify your answer. Type an expression using 0 as the variable.) a) Q = D (Simplify your answer. Use a comma to separate answers as needed.) b) O = D (Simplify your answer.)