Find value of x, y and z pls slove it

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.

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