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2 cards from this section. Quick, good the night before a test.
What is the common ratio of the geometric series 1, 2, 4, 8?
Divide any term by the previous term.
In the geometric series, what is the first term of 3, 9, 27?
Look for the initial value in the sequence.
What is a geometric series?
Consider what a series represents.
True or False: A common ratio in a geometric series can be negative.
Think about how values can change in sequences.
A stock's price doubles every year. If it starts at $100, what will be its price after 5 years? Use a geometric series to find the total value.
Focus on how each year's growth compounds.
A virus's population triples every week. If initially, there are 5 bacteria, calculate how many there will be after 4 weeks.
Each week's population is based on the previous week's by multiplying by 3.
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