Final answer:
The inequality representing the total number of available parking spaces at the waterpark after a certain number of hours is y ≤ 5,000 - 100 - 300t, where y is the number of spaces remaining and t is the number of hours elapsed.
Step-by-step explanation:
To represent the scenario where the waterpark has 5,000 spaces available for parking, 100 of which are reserved for staff, and cars are parked at a rate of 300 per hour, we can write an inequality. With y representing the total number of parking spaces remaining in the lot, the inequality would be:
y ≤ 5,000 - 100 - 300t
where t is the number of hours that have passed since the waterpark opened. This inequality takes into account the 100 spaces reserved for staff and the average number of cars parked each hour.