Need some help with Algebra
Thank you :)

What is the volume of this square pyramid?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex