Which of the following relations is not a function? A. (3, 4), (-2, 2), (3, 1), (-7, 2)

B. (-7, 4), (3, 3), (-2, 1), (7, 2)

C. (-2, 4), (3, 2), (7, 1), (-7, 5)

D. (7, 4), (-2, 2), (3, 1), (-7, 2)

A isn't a function

Step-by-step explanation:

ez. the answer is A

Step-by-step explanation:

if any x's repeat, it's automatically not a function. so you see how there are 2 3's on answer choice A

1

step-by-step explanation:

you are throwing one dart

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40