Bailey receives a medication and takes 10 milligrams the first day. he has to take 0.2 milligrams of the medicine each day for a number of days, d, after that. he writes the expression 10 + 0.2(d – 1) to find the total amount of medicine he has taken after d days. which statement about his expression is true?

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.