2. The demand for your cat paintings, in yearly sales, is q = -5p+140 if the selling price is Sp. You are able to create q = 3p-20 new paintings each year. (a) At what price should you sell your paintings to have neither a shortage nor a surplus? (b) In this case, how many paintings will you sell each year? (c) In this case, what will be your yearly profit, if you spend $7 on supplies for each painting?