The following would happen
When the taxes are decreased, the households would have a rise in their purchasing power. Their output would go up form q to q2.
The cost of the firms production is going to fall. The firm would then be able to raise their production hence increasing their supply. Output would rise and price level would fall.
If the value of the currency should fall, then it would cause the demand for foreign goods to rise then there would be a new equilibrium in the market.
An increase in productivity would raise supply for the producer hence bringing about a new rise in the price level.
Read more on aggregate demand and aggregate supply here:
https://brainly.com/question/25749867
#SPJ1