Kevin is an auto mechanic. He spends 3 hours when he replaces the shocks on a car and 2 hours when he replaces
the brakes. He works no more than 54 hours a week. He routinely completes at least 2 shocks replacements and 6
brake replacements a week. If he charges $400 for labor replacing shocks and $250 in labor for replacing brakes, how
many jobs of each type should he complete a week to maximize his income?