Tirri Corporation has provided the following information: Cost per Unit Cost per Period Direct materials $ 6.85 Direct labor $ 3.90 Variable manufacturing overhead $ 1.25 Fixed manufacturing overhead $ 22,500 Sales commissions $ 1.00 Variable administrative expense $ 0.55 Fixed selling and administrative expense $ 7,500 If the selling price is $26.20 per unit, the contribution margin per unit sold is closest to:

You are the manager of a large crude-oil refinery. as part of the refining process, a certain heat exchanger (operated at high temperatures and with abrasive material flowing through it) must be replaced every year. the replacement and downtime cost in the first year is $165 comma 000. this cost is expected to increase due to inflation at a rate of 7% per year for six years (i. e. until the eoy 7), at which time this particular heat exchanger will no longer be needed. if the company's cost of capital is 15% per year, how much could you afford to spend for a higher quality heat exchanger so that these annual replacement and downtime costs could be eliminated?

You work as the sales manager for a company that sells office supplies to businesses of all sizes. because the profit margins are razor-thin, you need to ensure that you are getting the very best prices on paper, pencils, pens, post-it notes, and other office supplies from the manufacturers. when reviewing the quarterly profit statement, you realize that your costs are higher than they should be, and you trace the higher costs back to an employee who has been lax about getting competitive bids to ensure the lowest prices. when you conduct your research to determine the reason for the higher costs, and take action to bring those costs back down, in which of the key management processes are you taking part?

Lee earns $1,482 of interest in 270 days after making a deposit of $15,200. find the interest rate.