Brody invested $7,000 in an account paying an interest rate of 2 3/8% compounded monthly. Robert invested $7,000 in an account paying an interest rate of 2 1/4%compounded quarterly. After 10 years, how much more money would Brody have in his account than Robert, to the nearest dollar?

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.

Um i that even math