The equation would be d/r.
Answer:
A is correct.
Step-by-step explanation:
Here, the x would represent the gallons per minute. The minutes are unknown, so it's just a variable. It can't be B either, because the addition sign would mean that the pool is being filled instead of drained.
Answer:
You subtract because you're taking away money when you're withdrawing.
Answer:
15
Step-by-step explanation: