Jessica paid $29.40 for 12 packs of socks. The equation that represents the situation is 12 C equals $29.40. If Madison wants it to buy 9 pairs of the same kind of socks, what would the cost be for 9 pairs of socks. ​

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.

There’s no picture i can’t without a picture here

The answer is b.$19.99  hope this : )