<h2>Answer</h2>

Or as ordered pairs: 
<h2>Explanation</h2>
Lets solve our system of equations step by step
equation (1)
equation (2)
1. Solve for
in equation (2)

equation (3)
2. Replace equation (3) in equation (1) and solve for 




or
3. Replace the values of
in equation (3) and solve for 
- For 


or 
- For 



or 
So, the solutions of our system of equation are:

Answer;
Sean got 24 points
Katie got 31 points
Kevin got 8 points
Emily got 12 points
Sorry I cannot give proper explanation because of typo issues.
Hope that can help.
Associative property
(3 + 9) + 6 = 3 + (9 + 6)
Answer:
4/7
Step-by-step explanation:
the rate of change (aka slope) is the change in y over change in x and as y goes up 4 x goes up 7 so the rate of change is 4/7
have a great day :D
Answer:
-72 and -77
Step-by-step explanation:
-149 divided by 2 is 74.5 and sense we want a 5 difference we divide 5 by 2 to get 2.5 the we take 74.5 and add 2.5 to get - 72 and take 74.5 and subtract 2.5 to get -77.