From 2014 to 2019, Eastlandia experienced large fluctuations in both aggregate consumer spending and disposable income, but wealth, the interest rate, and expected future disposable income did not change. The accompanying table shows the level of aggregate consumer spending and disposable income in millions of dollars for each of these years. Use this information to answer the following questions.

a. Plot the aggregate consumption function for Eastlandia.

b. What is MPC? What is MPS?

c. What is the aggregate consumption function? 

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Year Disposable income (millions of dollars) 2014 2015 2016 2017 2018 2019 $100 350 300 400 375 500 Consumer spending (millions of dollars) $180 380 340 420 400 500