Hi there!
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I believe your answer is:
Option C
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Here’s why:
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Hope this helps you. I apologize if it’s incorrect.
Here, I'll do the first one for you.
When they are talking about a number, use "x".
Since it says twice a number, you say 2x. Or 3x for three times the number
2x+12=3x-31
Then use algebra to find x. Get the numbers on one side and all the x's on the other.
2x+12+31=3x-31+31
2x+43-2x=3x-2x
x=43
Now do the rest on your own!
Answer:
n-5
Step-by-step explanation:
If n is the number, then the equation is n-5 because the number decreases by 5 each time.
Step-by-step explanation:
click on the image for the full answer