How do you solve 7+3m=-29,-5x+7=27,31=4-9y,-52-3u=8, and 6-x=15. i know i'm asking for a lot.

Isolate the variable by putting numbers over the equal sign and multiplying/dividing. I'll do them for you
A. 7+3m=-29
3m=-29-7
3m=-36
M=-12
B. -5x+7=26
-5x=26-7
-5x=19
X=-3.8
C. 31=4-9y
31-4=-9y
27=-9y
-3=y
D. -52-3u=8
-3u=8+52
-3u=60
U=-20
E. 6-x=15
-x=15-6
-1x=9
X=-9
Hope this helps

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.