HELP PLEASE FREE EXTRA POINTS 100 HEL Cingular's plan charged $39.99 per month with $0.45 for each additional minute. Verizon's plan cost $44.99 with $0.40 for each additional minute. How many additional minutes, A, would it take for the two plans to cost the same?

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.