During the summer holidays your brother and extra money mowing lawns he mows six lines an hour and has 21 lawns to mow how long will it take him

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

What is the measure of the smallest angle in the diagram? 15 29 32 45

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1