Done Chapter 8 Part 2: Homework Problems 6. Firms decide how much to invest by comparing the rate of return on their projects with: the productivity of the workers assigned to the projects. the before-tax rate of return. the interest rate. their total profit. Start: 1:54 PM Done Chapter 8 Part 2: Homework Problems 10. If the marginal propensity to consume (MPC) rises, the multiplier: rises or falls, depending on the size of the increase in the MPC. stays the same. also rises. falls. Start: 1:54 PM Done Chapter 8 Part 2: Homework Problems 14. (Table) The table shows data on consumption at various levels of income. The value of the marginal propensity to consume is: Income SO $500 $1,000 $1,500 $2,000 $2,500 0.25. 0.8. 0.75. 0.9. Consumption $250 $700 $1,150 $1,600 $2,050 $2,500 P id bcat unt Done Chapter 8 Part 2: Homework Problems 17. From year to year, consumption fluctuates more than gross private domestic investment. False True