Answer:

Step-by-step explanation:
1. 
2. 
3. b = 
Can't be simplified.
Answer:
-6 - (-8) = 2.
Your number line might have a bubble at 2. Or it may show movement 8 units to the right of -6. Whatever it is, you should end up at the value of 2.
Step-by-step explanation:
The answer is 200 points. Because when you add this 200 to her first 200 points, you will get her final points which is 400 points. Hope I was able to help.
It's scientific notation, so 1.4x10^7 would be 14000000 <span />
Answer:
Y = <u><em>5x</em></u> + <em><u>3</u></em>
Now for the other one if your asking is:
Y = <em><u>-12x</u></em> + <em><u>4</u></em>
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Hope this helped if so please mark brainlist!