Question
Flynn folded 30 paper hearts on the first day. Each day he did 9 more paper hearts than the previous day. On the last day, he made 156 hearts. How many days did he fold paper hearts?
2 m

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Flynn folded 30 paper hearts on the first day. Each day he did 9 more paper hearts than the previous day. On the last day, he made 156 hearts. How many days did he fold paper hearts?