Help me plzz I need help plzz help me plzzz "Which equation could be represented by the number line?"

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.

Extra points! find the missing dimension! need asap