Answer:
The demand curve will shift to the left thus, decreasing the both, the level of price and the output of the economy.
Explanation:
increase in taxes x tax multiplier = effect of taxes
150 billons x -1.3 = -195 billions
This will make the aggregate demand decrease.
However, if this increase in taxes is backed up with government spending will end up with a positive effect as the governement spending also has a multiplier effect which is greater than tax multiplier by one unit.