Can someone please help with these two questions? (Or at least one if you can)

Answer:
99.7
No
Step-by-step explanation:
a unit rate is for 1 item. So a one instead of 3
Step-by-step explanation:
60 = ft
1h sec
fistly convert mile to feet
68*5280= 359040
secondly divide by the seconds
359040÷3600=99.7 feet per second