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What is the sum of the first 30 terms of the arithmetic sequence? 6,13,20,27,
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5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?
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What is the total surface area of this square pyramid?
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What is the sum of the first 30 terms of the arithmetic sequence? 6,13,20,27,...
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