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.

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations