please answer the question at the bottom of the picture, the top says Tanya is making homemade greeting cards, that data below represents the amount she spends in dollars y, in terms of the number she makes, x. please explain too, ty

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.

31/6= 19/6 19/6 *1/7=19/42