Missing sequences 30,n,2.

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Which of these tables represents a non-linear function?

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?