If interest rates rise, then velocity should ____ in the Keynesian model and _____ in the Monetarist model

The learning curve is the relationship between

A) returns to scale and cumulative costs. B) marginal costs and current output. C) marginal product of labor and current output. D) average costs and cumulative output.

The wage gap between skilled and unskilled worker has

a. risen; some economists argue that this is partly due to increased international trade. b. risen; some economists argue that this is partly due to decreased international trade. c. fallen; some economists argue that this is partly due to increased international trade. d. fallen; some economists argue that this is partly due to decreased international trade.