Business and finance.If the inventor in exercise 53 charges $4 per unit, then her

profit for producing and sellingxunits is given by the function

P(x) = 2.25x- 7000

(a)What is her profit if she sells 2000 units?

(b)What is her profit if she sells 5000 units?

(c)What is the break-even point for sales?