宏观经济的问题Suppose firms become more optimistic about the future; as a result,the level of investment increases by $15.Also,the MPC is equal to 0.8.求问 每个round 1,2,3:change in AE和change in Y 分别是多少.该怎么算?

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宏观经济的问题Supposefirmsbecomemoreoptimisticaboutthefuture;asaresult,thelevelofinvestmentincreasesby$15.A

宏观经济的问题Suppose firms become more optimistic about the future; as a result,the level of investment increases by $15.Also,the MPC is equal to 0.8.求问 每个round 1,2,3:change in AE和change in Y 分别是多少.该怎么算?
宏观经济的问题
Suppose firms become more optimistic about the future; as a result,the level
of investment increases by $15.Also,the MPC is equal to 0.8.求问 每个round 1,2,3:change in AE和change in Y 分别是多少.该怎么算?

宏观经济的问题Suppose firms become more optimistic about the future; as a result,the level of investment increases by $15.Also,the MPC is equal to 0.8.求问 每个round 1,2,3:change in AE和change in Y 分别是多少.该怎么算?
1 15
2 15*0.8
3 15*0.8*0.8