Question

is the answer a, b, c, or d.

Answer 1

Your answer is C, comment if you would like me to send you the work for it 

Answer 2

For this case we have the following system of equations:
 x - 4y = 1
 x + 2y = 19
 Using the elimination method we have:
 -4y - 2y = 1 - 19
 -6y = -18
 y = -18 / -6
 y = 3
 Then, by clearing x from any equation we have:
 x + 2y = 19
 x = 19 - 2y
 x = 19 - 2 (3)
 x = 19 - 6
 x = 13
 The solution is given by:
 (x, y) = (13, 3)
 Answer:
 x = 13
 option c.