The number of laughs (denoted by
l
ll) can be defined as a function of the number of jokes (denoted by
j
jj), the amount of knowledge about the joke material (denoted by
k
kk), and the familiarity with the jokes (denoted by
f
ff) using this formula:
l
=
j
⋅
k
2
f

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.

Ithink the answer is b.