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 36 hours a week He routinely completes at least 2 shocks replacements and 6 brake replacements a week If he charges 450 for labor replacing shocks and 200 in labor for replacing brakes how many jobs of each type should he complete a week to maximize his income Kevin should do shock replacements and brake replacements every week to maximize his weekly income