evelyn packed this box with 1-inch cubes. which expression does NOT show how evelyn can find the volume of the box

You just need to add 32 to 14 and get 46.

270 books in each shelves

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.