Acoffee supply store waits until the orders for its special blend reach 100 pounds before making up a batch. columbian coffee selling for $8.85 a pound is blended with brazilian coffee selling for $3.85 a pound to make a product that sells for $6.55 a pound. how much of each type of coffee should be used to make the blend that will fill the orders?

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.