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Sometimes when people have bank accounts, they deposit one lump amount and leave it. Others deposit a fixed amount every year and that is the case we look at here in "repeated investment" problems. The first term in your sequence should be the amount of money in the account after the first year's interest is paid. From there, use the interest rate, r, as a decimal and n as the number of years to find the total sum of money in the account after a certain amount of time.
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Sample Problems (14)
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Geometric Series
Problem 1 6,441 views1 + 1 + 3 + ... 6 2 2 Find S_{7} 
Geometric Series
Problem 2 5,336 viewsSum:
5 + 15 + 45 + ... 4 16 
Geometric Series
Problem 3 4,914 views_{7} ∑ 8(½)^{n} ^{i = 2} 
Geometric Series
Problem 4 150 views 
Geometric Series
Problem 5 116 views 
Geometric Series
Problem 6 118 views 
Geometric Series
Problem 7 110 views 
Geometric Series
Problem 8 97 views 
Geometric Series
Problem 9 104 views 
Geometric Series
Problem 10 105 views 
Geometric Series
Problem 11 113 views 
Geometric Series
Problem 12 90 views 
Geometric Series
Problem 13 106 views 
Geometric Series
Problem 14 117 views
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