What expression is equivalent to 2(30x- 24),3(20x- 16), and 4(15x- 12)

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

For the inequality |c| < |d| to be true, which of the following must be true?

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.