I got stuck partway through a problem!
Last year, Central High's yearbook costs $75 and only 500 were sold. A really smart math student realized that for every $5 in reduction in price, 100 more students will buy yearbooks. What price should be charged so that the school maximizes revenue from yearbook sales?
I know that if x = cost of a yearbook and y = the number sold then xy = R, (R= the revenue). Then I know that for n number of reductions in price the yearbook will cost 75-5n and 500+100n students will buy the yearbook. And then I'm stuck ;A;

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Ohmygosh thank you so much!! I totally see what to do now! You're the best!

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