Bradley currently has a Visa card from his bank with the following terms: 21 percent on purchases, 25 percent on cash advances with a 3 percent cash-advance fee on the amount, and a default or penalty rate of 33 percent. His current statement shows a balance of $9,000. Lately, he has been having a hard time paying more than the minimum payment of 3 percent of his balance.
What is Bradley's minimum payment?

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?