What is 4 and 1/4 as an improper fraction

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

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Which of the following shows the length of the third side, in inches, of the triangle below