Which expression is equivalent to 6x2 – 19x – 55?

What is the least common multiple of 6 and 17?

What is the solution to the equation 9^(x+1) =27

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?