Find a Formula for A_n for the Arithmetic Sequence $$a _ { 3 } = 0 , a _ { 9 } = - 12$$

question 25

Multiple Choice

Find a formula for a_n for the arithmetic sequence.? $$a _ { 3 } = 0 , a _ { 9 } = - 12$$ ?

• A)a_n ?= 4 - 2n
• B)a_n ?= -6 + 4n?
• C)a_n ?= - 2 + 4n?
• D)a_n ?= 6 - 2n?
• E)a_n ?= 4n

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Definitions:

Abrasion

The process of wearing down or rubbing away surfaces through friction, often observed in geology as rocks and sediment are eroded by water, ice, or wind.

Upflow

The upward movement of fluid, air, or other substances, which can affect environmental conditions and processes, such as in aquifers or atmospheric phenomena.

Scoured

Describes the effect of being worn down or cleaned by fast-moving water or other fluids, often related to geological surfaces.

Permafrost

A condition in which water in the uppermost part of the ground remains frozen all or most of the time.