Answer
The ridership would fall to $14,500$ rides/day.
Work Step by Step
For fare $=p=6$,
using the result of part (a), $q=-4500p+41,500$, we find
$q=-4500(6)+41,500$
$=-27,000+41,500$
$=14,500$
The ridership would fall to $14,500$ rides/day.