Answer:
Fiscal policy refers to the economic policy that is used by the government of a particular nation to influence various macroeconomic variables such as inflation, employment, demand and services and economic growth through government spending and taxes.
Determination of multiplier:
ΔY = [MPC (ΔY - 0.2ΔY)] + ΔA
ΔY = MPCΔY - 0.2MPCΔY + ΔA
ΔY - MPCΔY + 0.2MPCΔY = ΔA
ΔY [1 - MPC + 0.2 MPC] = ΔA

