45 x 3.5 please explain

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

What is the shape of the height and weight distribution

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?