Which represents a function?

a 2-column table with 5 rows. the first column is labeled x with entries negative 5, negative 3, negative 3, 0, 5. the second column is labeled y with entries 10, 5, 4, 0, negative 10.

startset (negative 8, negative 2), (negative 4, 1), (0, negative 2), (2, 3), (4, negative 4) endset

a 2-column table with 5 rows. the first column is labeled x with entries negative 2, negative 1, 0, 0, 1. the second column is labeled y with entries negative 3, negative 2, negative 1, 0, negative 1.

startset (negative 12, 4), (negative 6, 10), (negative 4, 15), (negative 8, 18), (negative 12, 24) endset

StartSet (negative 8, negative 2), (negative 4, 1), (0, negative 2), (2, 3), (4, negative 4) EndSet

Step-by-step explanation:

A

A 2-column table with 5 rows. The first column is labeled x with entries negative 5, negative 3, negative 3, 0, 5. The second column is labeled y with entries 10, 5, 4, 0, negative 10.

B

StartSet (negative 8, negative 2), (negative 4, 1), (0, negative 2), (2, 3), (4, negative 4) EndSet

C

A 2-column table with 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 0, 1. The second column is labeled y with entries negative 3, negative 2, negative 1, 0, negative 1.

D

StartSet (negative 12, 4), (negative 6, 10), (negative 4, 15), (negative 8, 18), (negative 12, 24) EndSet

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set