For each of the following scenarios, use a graph to show how the firms desired capital stock

Question:

For each of the following scenarios, use a graph to show how the firm’s desired capital stock would be likely to change.
a. Technological change increases the productivity of capital.
b. The Fed decreases interest rates (and the inflation rate stays the same).
c. The real price of capital goods decreases.
d. The economy is expected to remain in recession for some time.