Stella wants to save money to buy a new laptop. every month she sets aside an increasing amount of money to save for the laptop. in her first month, stella has $5 saved. in the second month, she has $10, and in the third month, she has $20 set aside for the laptop. if the pattern above continues, how much will stella have after 6 months?

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.