Given that m∠abc=70° and m∠bcd=110°. Is it possible (consider all cases): Line AB is parallel to line CD?

Is there more to the question?

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.

40 mph is a possibility of a speed