Last month Molly earned $200 a week and got a bonus of $150. During the same period, Harry earned $300 a week and got a bonus of $50. If these earnings continue,
when will their earnings

be the same, and what will the amount be?

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.