You have a photograph 12 in. wide and 18 in. long you surround the photograph with mat x in. wide you want to make a frame for the matted photo but you only have an 80 inch length of wood to use for the frame what are the dimensions for the largest frame you can make

12:18=6:9=2:3
80÷5=16
16×2=32:16×3=48
32:48

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.