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you were planning to spend $12 on a pizza. Write and solve an inequality to represent the additional amount you must spend to get free delivery.


Free Delivery — for orders of $30.00 or more

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Kytten

You have $12, and need at least x more dollars to spend $30 total. So the inequality is 12 + x ≥ 30, where x is the number of dollars needed to get free delivery. To solve for x, subtract 12 from each side of the sign. x ≥ 30 - 12, x ≥ 18. You must spend at least 18 more dollars to qualify for free delivery.

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