Let

be the mean and

the standard deviation.
Joe's score tells you that

, while Jon's score says

. Solve this to get

and

.
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Answer:
Im being honest right now I would love to help but I dont know
Step-by-step explanation:
Answer:
Jeremy swims 4/5 of a kilometer each day.
Step-by-step explanation:
Since 5 3/5 can be turned into 28/5, then divided by 7/1, you will get 4/5. So Jeremy swims 4/5 of a kilometer each day.
Eli got his answer by multipying 5 3/5 by 7 which was an incorrect process.