How do I calculate the "quantity supplied after tax" column ? Question 5, a)

Question 5 [12 points] The data in the following table is for the latest Game by Jane Millworth. a) Fill in the Quantity Supplied (after tax) column assuming that a $4 per unit excise tax is imposed on the supplier. b) What is the equilibrium price and quantity before the tax? Equilibrium Price = $ Equilibrium Quantity = c) What is the equilibrium price and quantity after the $4 tax is imposed? Equilibrium Price (after tax) = $ Equilibrium Quantity (after tax) = d) What portion of the $4 tax is paid by the seller and what portion is paid by the consumer? Seller = $l Consumer = $