I was given a $125 gift card for the holidays. Socks cost $12 for 4 pairs of socks and vitamins cost $20 a bottle. I have to buy one bottle of vitamins. Come up with inequality for the number of socks I can buy.

It should be c i think.

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.