Answer:
$10 billion
Step-by-step explanation:
Calculation for By how much would government spending have to rise to shift the aggregate demand curve rightward by $25 billion
Using this formula
Government multiplier spending=1/1-MPC
Where,
MPC=0.9
Let plug in the formula
Government multiplier spending=1/1-0.9
Government multiplier spending=1/0.1
Government multiplier spending=$10 billion
Therefore how much would government spending have to rise to shift the aggregate demand curve rightward by $25 billion will be $10 billion