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Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
Chapter Review
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Exercise 82 Page 478

Start by identifying the starting value and the common ratio of the geometric sequence.

a_1 = 20; a_n=a_(n-1) * 3

Practice makes perfect

We want to write the recursive formula for the given geometric sequence. Let's identify the starting value a_1 and the common ratio r.

The starting value is a_1= 20 and the ratio between the consecutive terms is 3. Therefore, the common ratio of the sequence is r= 3. Let's use this information to write the recursive formula for our geometric sequence. General Form:& a_1= a; a_n=a_(n-1) * r Given sequence:& a_1= 20; a_n=a_(n-1) * 3

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