NEED HEP WILL GIVE BRAINLIEST IF YOU SOLVE ALL 3

Answer:
1) cant solve, you accidentally cropped out the bottom
2) ∠ABC=60°
3) x=25°
Step-by-step explanation:
1) cant solve, you accidentally cropped out the bottom. Let me know what the figure opposite the angle (5x-70) is and I can figure out the answer.
2)∠ABC=(45+15) (VERTICALLY OPPOSITE)
∠ABC=60°
(x=12.5°)
3) (x) + (3x-10) =90
4x -10 = 90
4x=100
x=25°