Answer: 

Step-by-step explanation: A supply equation shows us the mathematical relationship between quantity supplied and the price of the good. Since price and supply are positively related, P must carry a positive sign in the supply equation. 
Given, supply is Qs=4P - 24 
P is the price paid by consumers in the market. 
When a $3 tax is levied , price sellers receive becomes P-T = P - 3
So, the new supply equation will be 
