I think that it could be C. 13/12

The constant of proportionality,m, is 3 (option B)
The difference between their swim times was 0.055 seconds.
The first Choice is correct
Answer:
simple interest = $10, rate = 4.8%, time = 1 month
amount = $3500, rate = 4.8% and time = 1
Step-by-step explanation: