What is the result of adding 12 to -12? A)-12
B)0
C)12
D)24

PLEASE HELP ASAP

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

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?

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?