If you considered steak and lobster to be perfect substitutes for each other, your indifference curves between them would be L-shaped

In the above figure, Sheryl's monthly budget line for movies and plays shifted, as shown. The shift in the budget line is parallel, so the shift might be because

A) the price of a movie fell and nothing else changed. B) the price of a play fell and nothing else changed. C) Sheryl's income decreased and nothing else changed. D) Sheryl's income increased and nothing else changed.

Autonomous expenditure times the multiplier equals

A) autonomous consumption. B) equilibrium GDP. C) autonomous saving. D) planned autonomous investment.