1) Illustrate and describe the impact on equilibrium price and quantity of electric vehicles if cost of petrol increases at the same time as the government provides subsidies to electric car manufacturers.

2) Illustrate and describe the impact on equilibrium price and quantity of mangoes during the 2018 Australia-wide food safety scare.

3) Illustrate and describe the impact on equilibrium price and quantity of fruits when the government provides incentives for young farmers to enter the fruit industry as well as promotes healthy nutrition to the public.