Calculate the total change in aggregate demand because of an initial $300 decrease in investment spending, given that C = 150 + 0.50YD.

Which of the following would cause a leftward shift in the investment function?

A) technological progress B) a reduction in the rate of interest C) optimistic expectations about business conditions D) an increase in business taxes

A decrease in demand is represented by a

a. movement downward and to the right along a demand curve. b. movement upward and to the left along a demand curve. c. rightward shift of a demand curve. d. leftward shift of a demand curve.