Adrian invested $9,600 in an account paying an interest rate of 7 1/2% compounded monthly. Lauren invested $9,600 in an account paying an interest rate of 7 5/8% compounded continuously. To the nearest dollar, how much money would Adrian have in his account when Lauren’s money has tripled value ?

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.