How do you set this up in excel using solver? The answers are highlighted but how do you get that? Spending on advertising Revenue $($in $ $1000$ s$)$ from advertising x minutes on TV$,$ y minutes on radio is of form $-$A x$^2-$B y$^2+$C x y$+$D x$+$E y$,$ where 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 $-0\mathrm{.}3$ x$^2-0\mathrm{.}4$ y$^2+0\mathrm{.}8$ x y$+5$ x$+10$ y$.$ How can the firm maximize its revenue?