For a monopoly, the entry of new firms is difficult, but not impossible

Everything else held constant, a decrease in planned investment expenditure ________ aggregate ________

A) increases; demand B) decreases; demand C) decreases; supply D) increases; supply

Suppose a man and a woman are in love and care for the other's happiness as well as their own consumption. Suppose the man is more selfish than the woman UM = CM2/3 UW1/3 UW = CW1/2 UM1/2 They will maximize the joint happiness (UM + UW) where

a. CM = 100; CW = 0 b. CW = 100; CM = 100 c. 50 < CM < 100; 0 < CW < 50 d. 50 < CW < 100; 0 < CM < 50