Anna Does Sit-Ups To Get Ready For Her First Triathlon. When She Starts, She Does A Sit-Up Every \[2\] Seconds. But, As She Gets Tired, Each Sit-Up Takes Longer And Longer To Do. Is The Number Of Sit-Ups Anna Does Proportional To The Time She Spends Doing Them?. Is the number of sit. Is the number of sit.

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