1. Aggregate expenditure and income The following table shows consumption (C), investment (1), government purchases (G), and net exports (X - IM) in a hypothetical economy for various levels of real GDP (Y). Assume that the price level remains unchanged at all levels of income. All figures are in billions of dollars. Compute total expenditure for each income level, and fill in the last column in the following table. Y C I G X - IM Total Expenditure 500 525 250 150 -200 600 550 250 150 -200 700 575 250 150 -200 800 600 250 150 -200 900 625 250 150 -200 The following graph shows income (Y) on the horizontal axis and total expenditure (TE) on the vertical axis. The grey line represents a 45-degree (Y = TE) line. Use the blue points (circle symbol) to plot the total expenditure line for this economy at an income of $500 billion, $600 billion, $700 billion, $800 billion, and $900 billion