Which one of the four is this answer?

Step-by-step explanation:

2^2×=2^-3(×+5)

2x=-3x-15

15= -3x-2x

15=-5x

divide through by -5

x= -3

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)

all it means is function 3