Jeff starts writing a report for one of his classes. since the report is similar to a previous one he has written, he opens the previous report, makes changes, and re-saves the report, replacing the earlier version. later he discovers that he still needs the first report. which aspect of his resource (the first report) has been compromised?

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?