What is the tan A?
(See Photo)
A .4/3
B. 3/5
C. 4/5
D. 3/4

If you make it a little more clear i can answer it

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.

Basic algebra equation. first set up your equation: divide out 9.and now you are left with 2x + 4 = 8.