25. The profit function, where x is the number of units produced and sold, is given as P(x) = -x2 + 980x - 3000 a) (4 pts) How many units must the company produce and sell in order to maximize profit? 98000. zx-a plow:980-2X=0 2x=980 (X=490 b) (2 pts) What is the maximum profit? PCX)=980x-X-1000 16490)-9806490)-(490-3000 =237100 c) (4 pts) Compute the second derivative and explain why this shows your answer is a maximum (