Cost per minute to advertise TV Radio $3,000 $1,000 Revenue (in $1000s) from advertising x minutes on TV, y minutes on radio is of form -Ax-By+Cxy+Dx+Ey, where A B C 0.3 0.4 0.8 A firm is planning to spend $75,000 on advertising. It costs $3000 per minute to advertise on television and $1000 per minute to advertise on radio. If the firm buys X minutes of television advertising and Y minutes of radio advertising, its revenue in thousands of dollars is given by -0.3x^2-0.4y^2+0.8xy+5x+10y. How can the firm maximize its revenue? DS E 5 10