Question 1053392
p(x)=-5x^2+50x+3.
128 = -5x^2+50x+3
5x^2 - 50x + 125 = 0
x^2 - 10x + 25 = 0
(x-5)(x-5) = 0
x = 5
5000 units must be produced to obtain a profit of $12,800