Find the unit rate.
621 miles in 9 hours
A.
630miles/hour
B.
69miles/hour
C.
69miles
D.
5,589miles
/hour
B. 69miles/hour
621 miles in 9 hours
A.
630miles/hour
B.
69miles/hour
C.
69miles
D.
5,589miles
B. 69miles/hour