The cost of every college is expected to increase 3.5% next year.
Write an equation that will help calculate the cost of
other colleges next year.
Use t to represent this year's cost and n to represent
next year's cost.

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.