Find all roots: x^3 + 7x^2 + 12x = 0
show all work and check your answer.

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

Which of the following are parts of a sphere

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?