-$69.68 is your answer if I hope that this is correct.
Perimeter is 28 and area is 32
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 :)
A fair coin just means 50% heads 50% tails. so the sample is still 50% heads 50% tails.
