this is correct answer. Please explain step by step

The weekly demand and supply for milk is given by the following equations, Qd = 10-1.8P and 05 = 2 + 1.5P. The average US price per gallon of mil is $4.20. lntructions: Use one decimal for nal answers. P0 = $ 00 = gallons cso.s:_ P3015:- Surplus at $4.20 is: CS at $4.20 is: PS at $4.20 is: DW at $4.20 is: If the government purchased the surplus, this would cost $ DW when the government purchases the surplus = $|j| PS at $4.20 and government purchasing the surplus =