Include all relevant calculations/graphs please I need this asap

incentives had Decid tion function have shifted? 8. (More difficult) Between 2008 and 2009, real disposable income (in 2009 dollars) declined slightly (by $19 bil- lion), owing to a recession. The decline in real consump- tion expenditures was far larger: $133 billion. Explain why dividing the two does not give a good estimate of the marginal propensity to consume