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3 cards from this section. Quick, good the night before a test.
Find the 3rd term of the sequence 1, 2, 4, 8,...
Multiply the previous term by the common ratio.
Is 4, 8, 16, 32 a geometric sequence? If yes, what is the common ratio?
Divide any term by the previous term.
What is a geometric sequence?
Think about how each term relates to the previous one.
If the common ratio (r) is 1, what can we say about the sequence?
Consider the nature of the sequence with a ratio of 1.
A bank offers an interest rate of 4% compounded monthly. If you deposit $500, what will the total amount be after 2 years?
Use the compound interest formula with r adjusted for monthly compounding.
The value of a certain investment is described by the geometric sequence: 100, 150, 225,... If this continues, what will the value be after the 10th term?
Identify a and r, then apply the n-th term formula.
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