Final answer:
The question requires calculating the equilibrium level of income using an economic model. However, the provided model seems to have incorrect or incomplete information. Equilibrium is found when aggregate expenditure equals national income.
Step-by-step explanation:
The student's question is asking to calculate the equilibrium level of income in the given economic model. To find this, we would normally sum up consumption (C), investment (I), and government spending (G) while taking taxes (T) into account, and solve for the national income (Y) that equals aggregate expenditure (AE).
In the provided economic model, we have the following variables:
C = 6074 + 0.6Yb (Consumption)
I = 7285 (Investment)
G = 11418 (Government spending)
T = 9179 (Taxes)
To calculate the equilibrium level of income (Y), we use the formula Y = C + I + G - T. Plugging the values in, the equation would look like Y = 6074 + 0.6Yb + 7285 + 11418 - 9179, with Yb representing disposable income, which is Y - T. However, we do not have the full equation here to calculate Y since the student provided incorrect economic model variables. Nonetheless, the equilibrium level of Y is found when aggregate expenditure (AE) equals Y.