Which of the following is the domain of the function g(f( f(x) = x + 4, g(y) = g(f(x)) = a. all numbers less than or equal to 4 b. all numbers less than or equal to -4 c. all numbers greater than or equal to -4 d. all numbers greater than or equal to 4

idk man good luck man

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional