If the reserve ratio is 20 percent, how much money can be created from $100 of reserves? Show your work

The figure above shows the demand for and supply of labor of students in Smallville. If the minimum wage is set at $8 per hour, how many hours of students' labor are unemployed?

A) 12,000 hours B) 9,000 hours C) 6,000 hours D) 0 hours

When firms exit a monopolistically competitive industry: a. the average total cost curves of remaining firms will shift upward

b. the demand curves of remaining firms are decreased at each level of output. c. the remaining firms will decrease production. d. the average revenue received by remaining firms will increase at each level of output.