Which pair of functions are inverses of each other? A f(x) = { + 4 and g(x) = 3x - 4
B. f(x) = { and g(x) = 5x3
c. f(x) = ? - 6 and g(x) = 36
D. f(x) = 2x - 9 and g(x) = 7

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.