What is the answer to this 3x-15= ax+7

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

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?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2