Question

The owner of a mid-size company advertises on the radio and in a newspaper. He has found that the number of units that he sells is approximated by N(x,y)=−0.5x^2−0.6y^2+3x+6y+250, where x (in thousands of dollars) is the amount spent on radio advertising and y (in thousands of dollars) is the amount spent on newspaper advertising. How much should he spend on each to maximize the number of units sold?

Answer 1