Suppose there are 100 firms each with a short run total cost of STC = q2 + q + 10, so that marginal cost is MC = 2q +1 . If market demand is given by QD = 1050 ? 50P, how much will the individual firm produce?

If an individual borrows $200 at an annual rate of interest of 10%, what is the total amount that he will have to repay after one year?

A) $20 B) $220 C) $210 D) $200

Mrs. Lovejoy decides to invest in companies which she believes are producing its goods based on the preferences of consumers. Mrs. Lovejoy is investing in companies that are

A) always going to be profitable. B) allocatively efficient. C) productively efficient. D) both productively and allocatively efficient.