Which of the following tables represents a proportional relationship?
A.
x 2 3 4 5
y 3 6 9 12

B.
x 2 4 6 8
y 3 4 5 6

C.
x 1 4 7 10
y 0 3 6 9

D.
x 2 4 6 8
y 3 6 9 12

It's D.

Step-by-step explanation:

I don't have a step by step explanation for this but just look at all the choices.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )