A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
5x + y = 48
3x - y = 16
Add to eliminate y.
Subtract to eliminate x.
Subtract to eliminate y.
Add to eliminate x.

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

Nikolas calculated the volume of the prism. his work is shown below.