Find the Indicated Term of the Arithmetic Sequence Based on the Given

question 14

Multiple Choice

Find the indicated term of the arithmetic sequence based on the given information.
- $a _ { 1 } = 13$ and $a _ { 18 } = - 55 ;$ Find $a _ { 9 }$

• A) \(- 91\)
• B) \(- 19\)
• C) \(- 55\)
• D) \(- 23\)

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Definitions:

Magma Chamber

A large reservoir in the crust or mantle that is occupied by a body of magma.

Sedimentation

The process by which particles settle out of a fluid, leading to the accumulation of solid material on the floor of a water body or other surface.

Hot Springs

Natural pools of water that are heated geothermally from the Earth's interior, often found in volcanic areas.

Geothermal Power

The generation of electricity using the heat from within the Earth's crust, often harnessed at volcanic or tectonic plate boundaries.