Carson runs a farm stand that sells strawberries and bananas. Each pound of
strawberries sells for $3 and each pound of bananas sells for $1.50. Carson sold 4
times as many pounds of strawberries as pounds of bananas and he made $135
altogether. Graphically solve a system of equations in order to determine the number
of pounds of strawberries sold, 2, and the number of pounds of bananas sold, y.