Suppose that the behavior of households and firms in an economy is determined by the following equations
C=50+0.9Y
Ii(intended investment)=50
Answer the following questions, using algebraic manipulations only.
- What is the equation for the AD curve?
- What is the level of equilibrium income?
- If intended investment increases by 10 units to 60 units, by how much will equilibrium income rise? How much will be the new equilibrium income?