Answer:
considering the economy is stable it will expand the economy
Explanation:
The multiplier effect of the 100 public spending will be partially negate by the negative multiplier of the taxes.
100 x 1 /(1-0.7)
-100 x 0.7/(1-0.7)
100/0.3 - 70/0.3 = 30/0.3
The income will increase for 100
a portion of this increase will go abroad because is an open economy and the effect will be lower than 100 but the economy will expand.