Any help.

Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839

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

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie