Question

Anna does sit-ups to get ready for her first triathlon. When she starts, she does a sit-up every 222 seconds. But, as she gets tired, each sit-up takes longer and longer to do.

Answer 1

No, the number of sit-ups Anna does, are not proportional to the time she spends doing them.

Explanation:

When Anna starts, she does a sit-up every 22 seconds.