Nerds R Us just marketed a new kind of calculator. Researchers have found that the price- demand and cost function for these calculators are as follows:p x( ) = 75 - 2.5x ,C x( ) = 120 +10x where x is in thousands of calculators andC x( ) is in thousands of dollars. a. How many calculators will it take to maximize the revenue? b. What is the maximum revenue? (to nearest dollar) c. What is the break-even point(s)? d. What would the profit be if 9000 calculators are produced and sold? (to nearest dollar) e. What should the calculators be priced at in order to maximize the profit? (round to nearest cent