In the function. Y+3=(2x)^2+1 what effect does the number 2 have on the graph as compared to the graph y=x^2 A. it stretches the graph vertically by a factor of 2

B. It stretches the graph horizontally by a factor of 2

C. It shrinks the graph vertically to 1/2 the original height

D. It shrinks the graph horizontally to 1/2 the original width

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Solve 17= -13 - 8x and show your work.

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.