Which expression is equivalent to 2(x² - 1) + 3x(x – (4)?

plss help me .​

Ican't do any of the other stuff, but i can get you started. the answer, i believe, is $2.50.

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.