Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at 100 miles per hour. The eastbound train travels at 80 miles per hour. How long will it take for the two trains to be 468 miles apart?
Do not do any rounding.

Answer might be d.i think

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.