Help me with this plz?

Step-by-step explanation:

step 1. A polynomial (P) cant have variables in the denominator.

step 2. P can only have whole number exponents (0, 1, 2 ,3 . . )

step 3. P cannot have infinite terms.

step 4. This excludes answera #1, #2, #3.

step 5. the answer is #4.

l.ln.lln.k.nkl

step-by-step explanation:

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