Which of the following generate the type of externality previously described? Check all that apply. The local airport has doubled the number of runways, causing additional noise pollution for the surrounding residents. Jacques has planted several trees in his backyard that increase the beauty of the neighborhood, especially during the fall foliage season. A leading software company has decided to increase its research budget for inventing new open-source technologies. Your roommate Musashi has bought a bird that keeps you up at night with its chirping.

Ainvolve the sharing of electrons

$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?