28. Which of the following would not increase autonomous consumption spending? 37. Which of the following is equivalent to the marginal propensity to consume? 82. If income increased by $20,000, government purchases are fixed at $10,000, investment spending is fixed at $5,000, net exports are refixed at $500, and aggregate expenditure is increasing by $15,000, what is the marginal propensity to consume (MPC)?