Acountry is closed. it has no government sector, and its aggregate price levels and interest rates are fixed. furthermore, the marginal propensity to consume is constant and the country's consumption function is as follows: c = 200 + 0.75yd, where yd is disposable income and c is consumption. assume that planned investment equals 75. when real gdp equals $900:
a. planned investment equals $900.
b. unplanned inventory investment is negative.
c. the economy is in income–expenditure equilibrium.
d. autonomous consumption equals $900.

Rolston music company is considering the sale of a new sound board used in recording studios. the new board would sell for $27,200, and the company expects to sell 1,570 per year. the company currently sells 2,070 units of its existing model per year. if the new model is introduced, sales of the existing model will fall to 1,890 units per year. the old board retails for $23,100. variable costs are 57 percent of sales, depreciation on the equipment to produce the new board will be $1,520,000 per year, and fixed costs are $1,420,000 per year. if the tax rate is 35 percent, what is the annual ocf for the project?