An economy is described by the following equations:
![1296_3129fe31-1fa7-4720-8a3d-5f32ea405ad9.png](https://secure.tutorsglobe.com/CMSImages/1296_3129fe31-1fa7-4720-8a3d-5f32ea405ad9.png)
a. Write the equation for the aggregate demand curve.
b. Suppose that P = 15. What are the short-run equilibrium values of output, the real interest rate, consumption, and investment?
c. What are the long-run equilibrium values of output, the real interest rate, consumption, investment, and the price level?