Assume that taxes depend on income. The MPC is 0.8 and t is 0.4. If government purchases increase by $100 billion, the equilibrium level of output will increase by

Which market structure(s) include(s) many firms with differentiated products who can enter and exit the market freely?

Unemployment insurance:

A. varies widely across countries. B. has a set minimum in the US. C. is typically 32 weeks in the US, except for times of unusually high unemployment. D. All of these are true.