PLEASE HELP ME I WILL MARK BRAINLIEST IF YOUR RIGHT..

C

Step-by-step explanation:

a function means each x value will have only one outcome

example, (8,5) (9,5) is ok but (8,6) (8,10) isnt

The correct answer is "C" because (x, y) represent a function of ordered pairs like {(-1, 1), (0, 0), (1, 1), (2, 2)}.     :)

Step-by-step explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation: