C) is correct x=15
2x-4=26
2x=30
X=15
Answer:

Explanation:
(3 × 10⁸) × 2 × 10³
3 × 10⁸ × 2 × 10³
3 × 2 × 10⁸ × 10³
6 × 10¹¹
In decimal: 600,000,000,000
(3b-6)+(b-2)=180
4b-8=180
4b=188
b=47°
Hope my answer helped u :)
X is 65 because there is a theorem saying that when a transversal crosses two parallel lines, the corresponding angles are congruent. Since x is the other side of the corresponding angle of 115, you have to do 180-115, since a straight line is 180°.