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3. Joe Podivinski, 19, needs a job to cover part of his university tuition next year. He is looking to raise $7,200 over the summer towards this goal. Acme Vacuum Company would hire him to sell robotic vacuum cleaners door-to-door. The company estimates that Joe's variable costs per sale (including paying Acme for its vacuums) will amount to 70% of the selling price of the units. Joe's fixed costs for the summer, including rent and expenses, is $2,800. Acme estimates a keen salesperson can sell $30,000 of robotic vacuum cleaners over the summer. Joe also knows he can instead return to his union job in a manufacturing plant. Although his salary would be assured at that job, he would be able to save only $6,200 for tuition. Which job should Joe take? What factors did you consider when making your decision? 4. Martin's Board Game Emporium sells games purchased from a wholesaler, who in turn buys them from a manufacturer. The wholesaler charges a 20% margin on its selling price, and Martin enjoys a modest 95% mark-up on cost. If the manufacturer sells the games for $20, what is Martin's selling price to customers