What mistake did Elijah make? Choose 1
Elijah shaded the multiples instead of the factors of 50.
B
Elijah shaded the factors of 25 instead of the factors of 50.
Elijah did not make a mistake.
Elijah shaded three numbers, but there are always an even number of factors.

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.