An instructional video is 5.4 minutes long. how long is the video in seconds? how long is it in hours?

So, there are 60 seconds in a minute. And 60 minutes in an hour.
5.4 minutes times 60 would get you the number of seconds long the video is.
5.4 divided by 60 would be the number of hours long the video is.
The video is 324 seconds long and 0.09 hours long.
:P

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.