Find the First Term and the Common Ratio for the Geometric

question 168

Multiple Choice

Find the first term and the common ratio for the geometric sequence. Round approximations to the nearest hundredth.
- $$a _ { 2 } = - 16 , a _ { 5 } = 128$$

• A) \(\mathrm { a } _ { 1 } = 8 , \mathrm { r } = - 2\)
• B) \(\mathrm { a } _ { 1 } = 8 , \mathrm { r } = - 0.5\)
• C) a \(\mathrm { a } _ { 1 } = 128 , \mathrm { r } = - 0.5\)
• D) \(\mathrm { a } _ { 1 } = 16 , \mathrm { r } = 2\)

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