Answer
There is a surplus of about $9170$ rides.
Work Step by Step
The price $p=5$ is more than the equilibrium price of ${{\$}} 3.50$ (see part (a)), so we expect a surplus.
When p=5,
Demand:
$\quad\left[\begin{array}{l}
q=64(5^{-0.76})\\
q\approx 18.8349
\end{array}\right]\quad $
Supply:
$\left[\begin{array}{l}
q=2.5(5)+15.5\\
q=23
\end{array}\right]$
The supply is about $23-18.8349\approx 9.170$ thousand rides greater than the demand. That is, there is a surplus of about $9170$ rides.
