What is 6y-32 written in an expression

The value of cos 30° is the same as which of the following?

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.

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)