# algebra

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suppose you right a book. the printer charges \$4 per book to print it, and you spend #3500 on advertising. you sell the book for \$15 a copy. how many copies must you sell so that your income from sales is greater than your total cost?

• algebra -

costs= fixed cost + variable cost
income=15*books

if income is > than costs
15*B>3500+4B
11B>3500

B>327, so B must be 328 so that income is greater than costs.

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