What is the solution to the inequality + 4 ≤ 0?

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

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?

Factor the expression using gcf 9b+45