Vicki has 30 days to train for a swimming competition. She swims 20 laps on the first day, then each day after that she swims two more laps than the previous day. So, she swims 22 laps on the second day 24 laps on the third day, and so on.  1) How many laps does Vicki swim on, a) tenth day and b) the final day?  2) how many laps does Vicki swim in total?

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Chapter8: Sequences, Series,and Probability
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Vicki has 30 days to train for a swimming competition. She swims 20 laps on the first day, then each day after that she swims two more laps than the previous day. So, she swims 22 laps on the second day 24 laps on the third day, and so on. 

1) How many laps does Vicki swim on, a) tenth day and b) the final day? 

2) how many laps does Vicki swim in total? 

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