Which of the following is an example of an implicit cost? (i) the owner of a firm forgoing an opportunity to earn a large salary working for a Wall Street brokerage firm (ii) interest paid on the firm's debt (iii) rent paid by the firm to lease office space

If the supply curve for orange juice is estimated to be Q = 40 + 2p, then, at a price of $2, the price elasticity of supply is

A) .01. B) .09. C) 1. D) 11.

Which one of the following will shift the investment demand curve leftward?

a. A technological breakthrough. b. Lower tax rates. c. Optimistic business expectations. d. A lower rate of capacity utilization. e. None of these.