Answer:
36+9x=99
x=7
Step-by-step explanation:
36+9x=99
Subtract 99 and 36:
63
9x=63
Divide:
x=7
It’s definitely is A,D, and C
Answer:
B. 
Step-by-step explanation:
The given quadratic trinomial is;

Comparing this to
, we have a=5,b=17,c=6.

Two factors of 30 that add up to 17 is 15 and 2.
We split the middle term to obtain;

We factor by grouping;

Factor further

The correct answer is B.
Answer: dependent
Step-by-step explanation:
-3 because you could eliminate the 3x by subtracting it by 3x