Which of the following sets of data does not represent a function?

set a
x
y
6
3
8
4
5
7
9
2

set b
x
y
0
3
1
8
2
8
3
-7

set c
x
y
10
7
20
11
30
9
40
7

set d
x
y
3
9
2
2
8
-3
2
1
a.
set a
b.
set b
c.
set c
d.
set d

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

What is the solution to the equation in the & show work i’m very

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?