Ginger’s baby weighed only 3 3/8 pounds when it was born. the doctor said it could not leave the hospital until it weighed 5 1/2 pounds. how many pounds must the baby gain before it can go home with ginger?

Ginger's baby must gain 2.125 pounds

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.