Mark owns lawn service company. He uses the function f(t) = 10 + 25 to determine the cost of his services where t is the time, in hours, he spent mowing. How much will Mark charge for working 2.5 hours?
O A. $25.00

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.

C