Answer:
Charlotte traveled 319.50 feet during this time.
Step-by-step explanation:
Speed of the Charlotte's car = 56.0 miles/hour
1 hour = 3600 seconds
Then 56.0 miles/h :

Duration of time for which she took off her eyes from the road : 3.89 s
Distance covered in 3.789 seconds:

1 mile = 5280 ft
Charlotte traveled 319.50 feet during this time.