Answer:
1. A
2. A
3. C
4. C
5. A
Step-by-step explanation:
Answer: b is the answer
Step-by-step explanation:
I think the root of "3x + 1 = 7" is 2...
The answer is (9,21) because is you plug in 9 for x, and add 12, you get 21.
We need to know the definition of the "combined function" h(x). I'm going to guess--by looking at answers--that the function is

making it

This function is undefined wherever the denominator is equal to 0 (division by zero is undefined). Factor the denominator.

The two values of x that make the denominator 0 are 3 and -3, otherwise written

.