!!!! PLEASE HELP!!!!!
Taking into account reaction time, the distance d (in feet that a car requires to come to a complete stop while traveling r miles per hour is given by the following function.

d(r)=6.97r-90.33

a) express the speed r at which the care is traveling as a function of the distance d required to come to a complete stop. verify your answer by checking that r(d(r))=r, d(r(d))=d
r(d)=_________
b) predict the speed that a car was traveling if the distance required to stop was 330 feet.
The car was traveling approxima

Question

!!!! PLEASE HELP!!!!!
Taking into account reaction time, the distance d (in feet that a car requires to come to a complete stop while traveling r miles per hour is given by the following function.

d(r)=6.97r-90.33

a) express the speed r at which the care is traveling as a function of the distance d required to come to a complete stop. verify your answer by checking that r(d(r))=r, d(r(d))=d
          r(d)=_________
b) predict the speed that a car was traveling if the distance required to stop was 330 feet.
         The car was traveling approxima

anonymous · Answer

is the same equation as above but instead of r-90.33 it will be r-90.39