If a3 = 7 and as = 17 are part of a arithmetic sequence, what is a2?

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?

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

Hannah paid $3.20 for 16 ounces of potato chips. hank paid $3.23 for 17 ounces of potato chips. who paid less per ounces?