Answer:
It is undefined.
Step-by-step explanation:
Any line with x value of 0 is undefined.
I’m not sure but i think 66 hours because both pumps must fill half of the pool which would split the timing for each which would make pump 1 take 36 hours to fill half and pump two take 30 hours to fill the rest. when you add these hours it equals 66. i hope i helped :)
Multiply $115.74 by .7 (.7 = 70%) then add that to $115.74 to get the total.