Problem set chapter 13 no idea how to do it

Paragraph Styles Editir 6 A GDP = Multiplier x A G - POLICY OPTION 2: A change in taxes. Predict how much tax revenues would have to change in order to return the economy to its full-employment level of real GDP. The MPC = 0.90 and there is no crowding-out effect. b. To close the recessionary gap consumption (C) must by $ billion. Formula: A GDP = Multiplier x AC To achieve this change in the level of consumption spending