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Joanna joins a CD club. She pays $7 per month plus $10 for each CD that she orders. Write an inequality to find how many CDs she can purchase in a month if she spends no more than $100. Identify what your variable represents.

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She can buy 9 CDs with 100
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amount that she may spend in month= x
formula of money that joanna use in cd club in month = 7+10y
if x=100 then [tex]7+10y \leq 100[/tex]

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