At a summer camp there are 40 boys out of 70 campers what is the ratio written as a fraction in simplest form

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

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.

How does the graph of y = 3x compare to the graph of y = 3-x?