To find the initial value of the swimming pool, we need to find the value of g when x is 0.
Using the given equation, g = 50x + 1,000, we substitute x = 0 to find the initial value:
g = 50(0) + 1,000
g = 0 + 1,000
g = 1,000
So, the initial value of the swimming pool is 1,000 gallons.