A good is not depletable if: Those who are unwilling or unable to pay for the good do not obtain its benefits. One person's benefit from the good does not reduce the benefit available to other people. It is not possible to prevent an individual from using the good. The quantity of the good is affected by the price a consumer pays for the good.

Based on the supply and demand theory, why do medical doctors earn higher wages than child-care workers?

Three pounds of material a are required for each unit produced. the company has a policy of maintaining a stock of material a on hand at the end of each quarter equal to 30% of the next quarter's production needs for material a. a total of 35,000 pounds of material a are on hand to start the year. budgeted purchases of material a for the second quarter would be:

Your sister turned 35 today, and she is planning to save $60,000 per year for retirement, with the first deposit to be made one year from today. she will invest in a mutual fund that's expected to provide a return of 7.5% per year. she plans to retire 30 years from today, when she turns 65, and she expects to live for 25 years after retirement, to age 90. under these assumptions, how much can she spend each year after she retires? her first withdrawal will be made at the end of her first retirement year.