A student earns $49 each week and spends 57 each day. The student saves any money that is left over at the end of the week. How much money does the student save after 4 weeks? A. SO B. 542 C. $56 D. 1343

The answer would be (c)

Hmmm i had this before , give me a sec

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.