40$. 7hrs
X$. 1hr
X=40•1/7
X~5.71 $ per hour
It would be 2 since that would give you the trio mail if expanded
The answer is either A or D, B and C are off the table because the two shapes need to be graphed for those to be relevant. The answer you get should be A I believe.
The rates are equivalent because both of them do 30 jumping jacks a minute.