The profit of a cell-phone manufacturer is found by the function y=-2x^2+108x+75 , where x is the cost of the cell phone. At what price should the manufacturer sell the phone to maximize its profits? What will the maximum profit be?

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!