Examine the following typical corporate bond listing: In the name column, NYTel is the abbreviated name of the company (New York Telephone) issuing the bond. What is the maturity date of the bond?

a. 2018
b. 2033
c. 2101
d. 2069

I’m not sure how this works

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.