Question 5 (4 points) Solve the problem. After a new firm starts in business, it finds that its rate of profits (in hundreds of dollars per year) after t years of operation is given by P'(t) = 3t2 + 2t + 11. Find the profit in year 5 of the operation. ( A) $8100 ( B) $19,500 O C) $12,400 ( D) $16,450 Question 6 (4 points) Calculate the Riemann sum [ fox) Ax; for the given data. i =1 x2 f(x) = 2 + 3x; [-1, 2] is divided into six equal subintervals, Xi is the midpoint. O A) 6.46875 ( B) 8.6875 O C) 5.96875 ( D) 4.46875