Andy purchases only two goods, apples (q1) and kumquats (q2). He has an income of $40 and

Question:

Andy purchases only two goods, apples (q1) and kumquats (q2). He has an income of $40 and can buy apples at $2 per pound and kumquats at $4 per pound. His utility function is U(q1, q2) = 3q1 + 2. What is his marginal utility for apples, and what is his marginal utility for kumquats? What bundle of apples and kumquats should he purchase to maximize his utility? Why?