The total revenue R earned (in thousands of dollars) from manufacturing handheld video games is given by

R(p) = 25p² + 1600p,

where p is the price per unit (in dollars).(a) Find the revenues when the prices per unit are $20, $25, and $30.

R($20)	$ thousand
R($25)	$ thousand
R($30)	$ thousand

(b) Find the unit price that yields a maximum revenue. $ per unit What is the maximum revenue? $ thousand Explain: