Specialization of labor makes sense only if there is some means of exchange

Suppose an economy has no income taxes or imports. If the MPC is 0.75, what does the expenditure multiplier equal?

What will be an ideal response?

If the inverse demand curve a monopoly faces is p = 100 - 2Q, MC is constant at 16, and the government imposes an $8 per unit specific tax on the monopoly, the deadweight loss due to both the monopoly and the tax is

A) $529. B) $1332. C) $1764. D) $441.