Grayson lives and works in Indiana, which has a flat state income tax of 3.23%. If his annual salary is $49,255 and he gets paid once a month, how
much is withheld from his gross income for state income tax in each pay
period?
A. $131.34
B. $13258
C. $1,325.80
D. $1,231.37

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.