Kendra rides her bike to school each day. It takes her 10 minutes to ride 30 blocks. What unit rate expresses the speed of Kendra's bike ride? (4 points)
A. 2 blocks per minute
B. 3 blocks per minute
C. 4 blocks per minute
D. 10 blocks per minute
To find the unit rate, we need to divide the number of blocks by the time it takes. In this case, Kendra rides 30 blocks in 10 minutes. So the unit rate is 30 blocks / 10 minutes = 3 blocks per minute.
Therefore, the correct answer is B. 3 blocks per minute.