The income equation tells us that Y = C0 + cY + I +G - cT + X - M0 - mY. Suppose that: C0 = 20, I = 20, G = 20, T = 20, X = 30 and M0 = 6.

(1) If c and m each equal 0.2, what is the level of income? What is the level of total imports?

(2) Now if investment rises by $10, what is the new level of income and what is the new level of total imports?

(3) (Investment I remains at 20 like before.) Now G increases by $10 and T increases by $10 at the same time, what is the new level of income and what is the new level of total imports in this case?