(nonannual compounding using a calculator) ford's current incentives for customers looking to buy a mustang include either financing at an apr of 4.9 percent compounded monthly for 60 months or $ 1 comma 000 cash back. let's assume suzie student wants to buy the premium mustang convertible, which costs $ 25 comma 000, and she has no down payment other than the cash back from ford. if she chooses the $1 comma 000 cash back, suzie can borrow from the vtech credit union at an apr of 6.9 percent compounded monthly for 60 months. what will suzie student's monthly payment be under each option? which option should she choose?

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?