The distance formula is d = rt, where d is the distance, r is the rate, and t is the time. If Rashaad drove from Baton Rouge to New Orleans in 1.5 hours, 72 miles away, before he flew out for New York. What was his rate of
speed?

Show Your Work
48 miles per hour
4.8 miles per hour
48 hours per mile
480 hours per mile