What is 20x^2+24x simplified?

Why do interests rates on loans to be lower in a weak economy than in a strong one

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.

What is the missing value in the proportion 4/5 = x/30