Chapter 8.6, Problem 32E

(a)

To determine

To calculate: The number of units sold, $x$ when the profitgiven by equation $-20\left(x^2-320x+3600\right)$ is greater than zero.

(b)

To determine

To calculate: The daily profit when 50 units are sold for the profit function $-20\left(x^2-320x+3600\right)$.

(c)

To determine

To calculate: The daily profit when 60 units are sold for the profit function $-20\left(x^2-320x+3600\right)$.