At the point where total utility is at its peak, marginal utility is:

A noncooperative equilibrium is one in which:

A. the participants act independently, pursuing only their individual interests. B. always results in a negative-negative outcome. C. a dominant strategy exists for both players. D. each player ignores the actions of the other players.

Suppose your bank pays you 4 percent interest per year on your savings account, so that $1,000 grows to $1,040 over a one-year period. If prices increase by 1 percent per year over that time, approximately how much real value do you gain by keeping $1000 in the bank for a year?

A. $0 B. $10 C. $30 D. $50