of unemployment during make it easier for workers to wages. Select one: a. High levels; a recession; accept lower b. Low levels; an expansion; accept lower c. High levels; an expansion; negotiate higher d. Low levels; a recession; negotiate higher to Let C = 70 +0.75y and / = 40. Assume no government or foreign sectors. Investment needs to increase by increase equilibrium output by a total of $600. Select one: a $150 b. $600 c. $560 d. $30