Eight bluefin tuna comprise 5% of the total tuna catch. how many tuna were caught in total?

5%   x
100   8   Cross multiply and divide = .4

8* 5% = .4

8* .05 = .4

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.