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PLEASE PLEASE PLEASE HELP ME!!!

Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9?

x + 2y = 21

A. 4x + 6y = 64
B. 2x + y = 36
C. 4x + y = 21
D. -3x + 4y = 33
E. 3x + 2y = 28

Respuesta :

calebrector

Answer:

C. 4x + y = 21

Step-by-step explanation:

(4 x 3) + 9

12 + 9 = 21

Answer:

It's C.

Step-by-step explanation:

It's right on edmentum. Also, just use substitution. Not that hard.

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