Arain barrel is a container that captures and stores rainwater for landscape and garden use during dry periods. rain barrels provide an external benefit to the community through water conservation. what can the government do to equate the equilibrium quantity of rain barrels and the socially optimal quantity of rain barrels? a. impose a tax on rain barrels that is equal to the per-unit externality b. offer a subsidy on rain barrels that is equal to the per-unit externality c. encourage homeowners to bargain with rain barrel producers d. nothing

Hello! i️ believe a.) is the correct answer. : )

$527.7.if the following was the question  $527.7 is the answer.students who are trying to raise funds have an agreement with a local pizza chain. the chain has agreed to sell them pizzas at a discount, which the students can then resell to families in the local community for a profit. it is expected that of the 500 families in the community, at most 70% will buy pizza. based on a survey of their personal preferences, the students believe that they should order no more than 120 cheese pizzas, no more than 150 pepperoni pizzas, and no more than 100 vegetarian pizzas. they also want to make sure that at least 20% of the total pizzas are cheese and at least 50% of the pizzas are pepperoni. they make a profit of $1.45, $1.75, and $1.98, respectively, for each cheese, pepperoni, and vegetarian pizza they resell. how many pizzas of each type should they buy?