Which of the following sets of ordered pairs is a function?

A.

Step-by-step explanation:

A ordered pair is when the x-axis of each point is different (only the x-axis)

Let's look at B

B has two x-axis point that is the same: (5,5) and (6,5)

Thus B is not a function

Let's look at C

C has two x-axis point that is the same: (2,3) and (2,6)

Thus C is not a function

Let's look at D

D has two x-axis point that is the same: (2,3) and (2,6)

Thus D is not a function

So A is the answer

Hope this helps!

518,400

step-by-step explanation:

the area is multiplying all the given measurements together.

40 * 18 * 30 * 24 = 518,400

i do not know this sorry : (