How many solutions are there to the quadratic equation
3x2 - 7x - 2 = 0?

zero

1

2

3

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?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

Plz hurry evaluate the expression a+b where a=8 and b=19