Macroeconomics equations, economics homework help

Answer the following questions about marginal propensity toconsume and the multiplier. First provide the correct equation andthen show your work to arrive at the answer:What is the marginal propensity toconsume when consumption changes from 7 to 6 and disposable incomechanges from 5 to 3?If disposable personal income is10 and consumption is 12, what is personal savings? Whatdoes this mean?What is the multiplier when thechange in equilibrium level of real GDP in the aggregateexpenditures model is 9, and change in autonomous aggregateexpenditures is 3?What is the multiplier when themarginal propensity to save is 1/3?What would happen to the marginal propensity to save when atax cut was enacted causing the multiplier to change to 5?The following criteria will be used to grade the papers:Correct equations are used andshownExplanations are correctCalculations are correct. Answers are correct