I will give extra points please help

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.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12