Answer:
The length of the focal width of the parabola is 1.
Step-by-step explanation:
Suppose we have a parabola with the following equation:

The centre is at point
.
The length of the focal width is of |4p|.
In this question:
We want to place in the general format. So


Comparing, we have that 4p = 1. So the length of the focal width of the parabola is 1.
Since 308 people can visit each day, and there's 8 shows each day, we just multiply 308 by 8.
308*8 = 2464 people.