An economy is described by the following equations:

C = 10 + 0.7(Y-T)

I^p = 80

G = 104

NX = 15

T = 170

Y* = 600

1. Find a numerical equation linking planned aggregate expenditure to output.
2. Find autonomous expenditure and induced expenditure in this economy.
3. Find the value of a short-run equilibrium output and construct a Keynesian-cross diagram.