Answer:
a rational individual, whos time is worth more than 7 dollar per hour would induce to fly rather than drive.
Explanation:
bus option    $100  104 hours Â
flight option   $800   4 hours Â
differential   $700 100 hours
the differential of 700 dollars allows the consumer to save 100 hours
700/100 = 7 dollar per hour
if a consumer values their time at more than $7 per hour, then it will be better for this consumer to purchase a flight to Ny to LA