Which of the sets of ordered pairs represents a function? A = {(1, −5), (8, −5), (8, 7), (2, 9)} B = {(7, −4), (7, −2), (6, −3), (−9, 5)}

A

Step-by-step explanation:

Hello There!

In order for a set of ordered pairs to represent a function none of the x values can repeat

In answer choice A each x value has a different y value so A is probably the answer

In answer choice B the x value 7 repeats therefore the set of ordered pairs do not represent a function

So we can conclude that the answer is A

answer: 180

step-by-step explanation:

12-2=10

20-2=18

10x18=180

step-by-step explanation:

try remembering the steps