Assume a closed economy and no government. Also assume consumption C=50-0.8Yd and investment I=80 a) derive the equation for saving b) find the equilibrium output c) what is the implied multiplier

Assume a closed economy and no government. Also assume consumption

C=50-0.8Yd and investment I=80
a) derive the equation for saving
b) find the equilibrium output
c) what is the implied multiplier