The product of -5 and a number is at least -40 A.
-5x < -40; x > -8

B.
-5x > -40; x > -8

C.
-5x ≥ -40; x ≥ 8

D.
-5x ≥ -40; x ≤ 8

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.