What is the the equivalent expression to 24-(-6)

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?

Which of the following represents a function? 50 !