i'm sorry, I really don't know, but Brainy or wtvr this keeps notifying me to answer a question and it's annoying.
First multiply 9 by 60 to find feet/minute: 9x60=540. Multiply that answer by 60 to get feet/hour: 540x60=32400. Divide that by 5,280 to get miles/hour: 32400/5280=6.14 roughly :)
Answer:
I believe the correct answer is option B