Answer:

Step-by-step explanation:
To find the slope, use the equation to find slope. The picture below shows what it looks like.
Using the equation, substitute the values in the x and y values.
Then solve
Sam would have to get a 97 on his next test in order to maintain his average score at an 85. This is because if you add up 63, 84, 96, and 97 you get 340. When you divide 340 by the 4 test scores you get an average of exactly 85
Answer: 35
Step-by-step explanation:
9.285714285714286 645=650 69=70