Question

8. A music store sells used CDs for $9. They buy used CDs for $4. You have $50 to

spend and many old CDs. Write an equation in standard form that models how
many CDs you can buy in this situation.
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Answer 1

Answer: 9x+4=50

Explanation:

In this case, we're looking at how many you can buy, not how many CD's you own.