Is 4.15 less or greater than 4.051

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

What is the number 321,000,000 in scientific notation? also what is the number? ?

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?