3. Solve:
2x + y + z = 1
x – y + 4z = 0
x + 2y – 2z = 3

Select the appropriate response

A) x=-3 y=5 z=2
B) x=2 y=-1 z=3
C) x=2 y=-1 z=3

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.