Scenario 34-2. The following facts apply to a small, imaginary economy. • Consumption spending is $6,720 when income is $8,000. • Consumption spending is $7,040 when income is $8,500. Refer to Scenario 34-2. The marginal propensity to consume for this economy is Group of answer choices 0.840. 0.83. 0.64. 0.56.