The things on the train heading west in the city water damage on a train on a track truck heading west away from the city they started 150 miles apart while the average speed of 55 mph how long will it take her to train how far outside the time when the two trains are each other is all .8 hours or 1.25 hours or 2.3 hours or 2.73 hours how many miles away from the city

The answer maybbe c

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.