Savannah's dog, Berta, loves to play in a little wading pool to cool off in the summer. Berta runs and jumps into the pool
with muddy feet and gets a lot of dirt in the pool. Savannah decides to empty the pool, clean out the mud, and then refill
the pool. The pool contains 72 gallons of water. She drains the pool until it is empty at a rate of 3 gallons per minute,
cleans the pool for 12 minutes, and then refills the pool at 3 gallons per minute.
1. Graph the number of gallons of water (G) in the pool over time (t).
2. Make piecewise function
3.domain and range?
4. What is the value of g(15)