Please help

You are given the following information about the Canadian economy. With every increase of one dollar in disposable income, saving increases 30 cents. The marginal tax rate is 12 percent. The marginal propensity to import is 3 percent. The slope of the aggregate planned expenditure curve is equal to The multiplier is equal to If the marginal propensity to consume is 0.75 and disposable income decreases by $600 million, consumption expenditure would by $ million