A baby gains 11 pounds in its firat year of life. The baby gained 4 pounds during the first four months and
second four months. How much did the baby gain in the last four months?
3 1/4 pounds
3 1/2 pounds

4 pounds
5 pounds

I’m vary good with science if you need with that

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.