Find the similarity ratio for each pair of triangles?

Find the value of the variable and the length of each secant segment

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles