Suppose a perfectly competitive firm's total cost of production (tc) is:

tc(q) = q^3 -10q^2 + 30q + 5,

and the firm's marginal cost of production (mc) is:

mc(q)= 3q^2 -20q +30.

the firm's short-run supply curve is given by

o p = q^2 - 10q + 30 + 5/q.

o p = 3q^2 - 20q + 30 for prices above $2.5.

o p =q^2 - 10q +30 for prices above $5.

o p = 3q^2 - 20q + 30 for prices above $5.

o p = q^2 - 10q + 30 for prices above $10.

Kumar consulting operates several stock investment portfolios that are used by firms for investment of pension plan assets. last year, one portfolio had a realized return of 12.6 percent and a beta coefficient of 1.15. the average t-bond rate was 7 percent and the realized rate of return on the s& p 500 was 12 percent. what was the portfolio's alpha?

Janis owns and operates a store in a country experiencing a high rate of inflation. in order to prevent the value of money in her cash register from falling too quickly, janis sends an employee to the bank four times per day to make deposits in a interest-bearing account that protects the store's revenues from the effects of inflation. this is an example of the (menu costs/ unit of account costs/ shoesleather costs) of inflation. pick one

Why would adjusting the money supply be expected to increase economic growth during a recession? a) increasing the money supply will encourage more saving. b) increased money supply will encourage more spending and investment. co) decreased money supply will encourage more spending and investment. d) recession is caused by too much