given ƒ(x) = x+1 and g(x) = x^2, what is (g o f) (x)? (g o f) (x) = x^2 + x + 1
(g o f) (x) = x^2 (x+1)
(g o f) (x) = x^2 + 1
(gof) (x) = (x + 1)^2

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?