143 cards, you can find this using the LCM or least common multiple. <span />
I think the answer is 12.6 extra gigabytes because:
20 - 51.50 = 31.50
31.50 / 2.50 = 12.6
The answer is C. Hope this helps
No, John is incorrect.
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Correct work shown:</h3>








The correct answer should be x = 7 or x = -1