What is X? Will give 30 points :)

What properties allow transformation to be used as a problem solving tool

The measures of the angles in △abc are given by the expressions in the table. angle measure angle a 65° angle b (3x−10)° angle c (2x)∘ find the value of x. then find the m∠b and m∠c.

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)