How many ways can 4 people arrive at a party?

We are going to name the people A, B, C, and D
1. A, B, C, then D
2. A, B, D, then C
3. A, C, B then D
4. A, C, D, then B
5. A, D, B, then C
6. A, D, C, then B
So at this rate, if there is 6 for the first letter, then there will be 6 for the others, so 6 x 4 = 24, so there are 24 different outcomes.
Hope this helped!

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.