If Jane works for 6 hours she can rent out 9 apartments, and if she works for 7 hours she can rent out 12 apartments. The marginal benefit of Jane's 7th hour of work equals:

Refer to Figure 15-15. If the government regulates Erickson Power Company so that the firm can earn a normal profit, the price would be set at ________ and the output level is ________

A) P3, Q2 B) P1, Q4 C) P2, Q2 D) P2, Q3

Gary buys a house for $200,000 using $10,000 of his own money and gets a mortgage for the remaining $190,000 . If the value of the house increases 7%, what will be the percentage increase in Gary's investment?

a. 25% b. 7% c. 14% d. 70% e. 140%