The marginal product of capital can differ in the short-run from the user cost of capital because: a. the MPK depends on how sensitive firms are to changes in the economy. b. installing new capital takes time to equalize the MPK and the user cost of capital. c. the MPK and the user cost of capital are always equal to each other. d. the MPK is exogenous while the user cost of capital is endogenous.

Amanager of a store that sells and installs spas wants to prepare a forecast for january and june of next year. her forecasts are a combination of trend and seasonality. she uses the following equation to estimate the trend component of monthly demand: ft = 30+5t, where t = 1 in january of this year. seasonal relatives are 0.60 for january and 1.50 for june. what demands should she predict for january and june of next year