To get an a in the course you must have an average of at least 90% on four test with 100 points each your scores so far or 89,93 and 80 what was the score on the fourth test to get an a in the course

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.

D.

If is congruent to,then m is the midpoint