Pleas i don’t understand!

A- It is January 1. You have just deposited $1,000 in a savings account that pays 8% per
year, compounded annually.

1- How much will your account be worth in a year?

2- In three years?

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.