Answer:
21 years
Step-by-step explanation:
Lawrence did research on many different swimmers. He graphed each swimmer with a tick on the graph. The more ticks, the higher amount of people. <em>Because most of the ticks are on 21, If I did this right, It should be 21.</em>
the answer is 52,734,375
12
Rotation doesn't alter the lengths.
6×2 = 12
4444444
sorry not that smart ok