please help i missed this class and i’m a little confused (question is in the pic)please tell me how to solve it

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

Tell whether the two rates form a proportion

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal