0.6 15 MPC = 3/5 or 0.6 10 10 5 A 5 Consumption function Change in consumption expenditure is $3 trillion Change in disposable income is $5 trillion 15 20 25 Disposable income (trillions of 2012 dollars) 10 Explore the grach and then answer the question. In the graph you've just explored, when disposable income increases by $5 trillion and MPC is 0.8, what is the change in planned consumption? The change in planned consumption is $trillion