Kristin owns a bakery called kristin's cake n' such and is considering lowering the price of her cakes. kristin polls her customers and determines she can sell 100 cakes each week when she charges $25 each. she also discovers that for every $1 decrease of the cakes she'll sell 5 more cakes. the graph bellow represent kristin's project weekly revenue for each decrease in price
. at what price should kristin sell her cake in order to reach her maximum potential?