I think it would be the second question!
Answer:
the system of equation has infinite solution
Step-by-step explanation:
, 
Solve the first equation for x_2
Subtract 5x1 on both sides


Now substitute -5x1 on second equation



0=0
So the system of equation has infinite solution
Dang I was just about to say 22
angle 3 and angle 4 are adjacent and complementary.
angle 5 is a vertical angle to the combination of angle 3 and 2
angle 4 and angle 5 are adjacent, supplementary, and form a linear pair
If you want me to explain why, comment it, i just have no time to now.
X^2 + 16x + ?
a^2 + 2ab + b
(a + b)^2 which is a perfect square.
To find b to determine the last value, you divide 16x by 2x.
so:
b = 8
the last value would be 8^2 which is 64.
Hence answer is C - 64