Identify like terms in each list below.
3d d^3 4d^2 5d^2 3g 10d

That's what I got:
3d^3(3x3x3)     4d^2(4x4)    5d^2(5x5)

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.