What is the length missing leg of the right triangle

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'