Pivot the system about the element in row 2, column 1. (Enter the augmented matrix with all cells in their original position.)

1 2 4 3

2 8 6 4

−1 4 2 3

Find the value of the variable and the length of each secant segment.

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?

Which compound inequality could be represented by the graph?