You have three separate accounts with your bank that you can manipulate with online banking. Account "A" is a checking account with a $5,245.50 balance, Account "B" is a personal savings account with a $12,850.25 balance, and account "C" is a joint

college savings account with your 12-year-old son. You move $2,500 from account "B" to account "A" to cover an unexpected bill. You also

move 1.5% of the remaining balance in account "B" to account "C" What is left in account "B" after these transfers?

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?