Can you help me please

Problem Set 1. Answer all three questions. They are of equal weight: 1. Suppose a rm's total revenues depend on the amount produced (q) according to the function: R = 70q q2 Total costs also depend on q: C= q2 +30q +100 21. What level of output should the rm produce to maximize prots (RC)? b. What will prots be at the maximum? 0. Show that the second-order condition for a maximum is satised at the output level found in part (a) d. Does the solution calculated here obey the \"marginal revenue equals marginal cost\" rule? Explain