Demetrius deposit $120 into his account. one week later, he withdraws $36. write an addition expression to represent this situation. how much higher and lower is the amount in his account after these two transactions

Two because two of one thing is two.

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.