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Subcategories

Changing Unit Speed

Sum of Consecutive Integers

Alternative Graphical Solution

@azhong392 Thanks for noticing this! This is a typo. The answer is correct, but the multiplication should say \(12 \times 6 = 72.\) It's been fixed now. Thanks very much for letting us know!

Continuous Changing Speed, Acceleration

@userusername Thanks so much for letting us know! I've fixed this now.