Question

company's monthly profit, P, from a product is given by P = -x2 + 105x - 1050, where x is the price of the product in dollars. What is the lowest price of the product, in dollars, that gives a monthly profit of $1,550? (Do not put a $ in your answer.)

Answer 1

P is profit, and you are looking for where the profit is $1,550 , so plug 1550 for P in the equation and solve for x.