Find the Indicated Term of the Sequence $a _ { 1 }$

question 106

Multiple Choice

Find the indicated term of the sequence.
-If the second term of a geometric progression is 45 and the third term is 9 , find $a _ { 1 }$ and $r$ .

• A) \(a _ { 1 } = 225 ; r = 5\)
• B) \(a _ { 1 } = \frac { 9 } { 5 } ; r = \frac { 1 } { 5 }\)
• C) \(\mathrm { a } _ { 1 } = 405 ; \mathrm { r } = \frac { 1 } { 9 }\)
• D) \(\mathrm { a } _ { 1 } = 225 ; \mathrm { r } = \frac { 1 } { 5 }\)

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