A manager purchased a total of 2121 coffee mugs and key chains. Each coffee mug cost \$$8.508.50, and each key chain cost ​\$$ 2.752.75. If the manager spent a total of \$$132.50132.50, how many coffee mugs did the manager purchase?

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.