The table shows the amount of water left in a pool over time as it is being drained. The table represents a linear function. Time (h) Water (gal)
0 18,500
1 17,000
2 15,500
3 14,000
What does the initial value mean for this function?

The pool contains 18,500 gallons of water before it is drained.

After 2 hours, 15,500 gallons of water have been drained from the pool.

Water drains from the pool at a rate of 1500 gallons each hour.

After 3 hours, 14,000 gallons of water remain in the pool.