Jonathan David likes to consume two goods, assists (x) and goals (y). He has a utility function: U(x, y) = xzy. Jonathan has an income of 90 minutes to spend on goals and assists. If the "price" of an assist is 20 minutes, and the price of a goal is 60 minutes, how many goals will he consume? how many assists? What is his total utility with this bundle? Illustrate your solution with a diagram including an indifference curve and budget constraint. (assume he can consume fractions of a goal or assist)