Use the Formula for the General Term of a Geometric $$\mathbf { a } _ { 1 }$$

question 23

Multiple Choice

Use the Formula for the General Term of a Geometric SequenceUse the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the
sequence with the given first term, $$\mathbf { a } _ { 1 }$$ , and common ratio, r.
-Find a9 when $a _ { 1 } = - 2 , r = 2$ .

• A) \(- 512\)
• B) \(- 1024\)
• C) \(- 508\)
• D) 14

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Ultraviolet radiation, a form of energy emitted by the sun that can cause skin damage and other health risks.

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The layer of gases surrounding the Earth, essential for life, and protecting it from harmful solar radiation.

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Natural fuels such as coal, oil, and natural gas, formed from the decomposed remains of ancient plants and animals, used for energy.