Given P (l, w) = 21 + 2w Find P (2,9)

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?

Simplify using positive exponents only.

Is a square always, sometimes, or never a parallelogram