5
e 2n+1 evaluate
n=1

3
e 3n evaluate
n=1

type the formula for the number of permutations of n things taken r at a time.
p(n, r)=?

type the formula for the number of circular permutations of n things.
pc(n, n) = ?

Part1 )
2n+1 from n= 1 to n = 5 = 3 + 5 + 7 + 9 + 11 = 35 

Part 2 )
3n from n = 1 to n = 3 = 3 + 6 + 9 = 18 

I hope it 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.