Use elimination to solve the system of equations:
3x-6y=-3
2x+4y=30

Answer this question only if you know the answer! 30 points and

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?

Find the area of an equilateral triangle with a side of 6 inches