Q7) B
Q8) B
Umm, i'm not sure if these are right.
For Question 7, all i did was divide the change in consumption over the change in income, ie. 80/100 = 0.8
For Question 8, use the multiplier, 30 * 1/MPS = 30 * 1/0.2 = 150. Now 150 + 400 which was the equilibrium income = 550?