THE FIRST THREE QUESTIONS PLEASE....I WILL MARK BRAINLIEST
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1. X=45
y= 30
3. 200 books 10%
400 books 20%
600 books 30%
800 books 40%
1000 books 50%
1200 books 60%
1400 books 70%
1600 books 80%
1800 books 90%
2000 books 100%
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