In a bag there are blue discs and white discs. there are eight times as many blue discs as green discs. Numberof blue discs: number of white discs=6:5.one disc is selected at random. workout the probability that the disc is either blue or white.

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.