1)
, 2) 
3)
, 4) 
5)
, 6) 
7)
, 8) 
9)
, 10) 
11)
12) 
Step-by-step explanation:
We need to solve each equation.
1) 
Solving:
Adding like terms:

Divide both sides by 11

2) 
Solving:
Adding like terms:

Divide by -8

3) 
Solving:
Adding like terms:

Subtract 9 on both sides:


Divide both sides by 4

4) 
Solving:

Divide both side by -7

5) 
Solving:
12r-1=11
Adding 1 on both sides

Divide both sides by 12

6) 
Solving:

7) 
Solving

8) 
Solving:

9) 
Solving:

10) 
Solving:

11) 
Solving:

12) 
Solving:

Keywords: Solving Polynomials
Learn more about solving Polynomials at:
#learnwithBrainly
Answer:

Step-by-step explanation:
Check the picture
Answer:
it 31 for sure but if not that than some thing is wrong
Step-by-step explanation:
15+12+4=31
(0,4) is the y intercept
Hope this helps :)