Joe made a trip by car and averaged 10 miles per hour faster than on the last 60 miles than he did on the first 100 miles. The total trip took 3 hours. What was the speed of the car on each part of the trip?

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _