Which equation would help determine the cost of 4 erases?
Choose 1 answer

The year before the 10s so it was like when caveman were alive

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.

The answer is a isosceles triangle

Complementary angles: angles whose sum is 90 degrees.supplementary angles: angles whose sum is 180 degrees.straight angle: an angle that is worth 180 degrees. (can be a straight  line)right angle: an angle that is worth 90 degrees ( usually marked by a small box and is the angle in a rectangle and square)