Find a Formula for A_n for the Arithmetic Sequence $\frac { 6 } { 7 }$

question 44

Multiple Choice

Find a formula for a_n for the arithmetic sequence.
A₁ = 0, d = - $\frac { 6 } { 7 }$

• A)a_n = \(\frac { 6 } { 7 }\) n - \(\frac { 6 } { 7 }\)
• B)a_n = - \(\frac { 7 } { 6 }\) n - \(\frac { 7 } { 6 }\)
• C)a_n = - \(\frac { 6 } { 7 }\) n + \(\frac { 6 } { 7 }\)
• D)a_n = \(\frac { 6 } { 7 }\) n + \(\frac { 6 } { 7 }\)
• E)a_n = - \(\frac { 7 } { 6 }\) n + \(\frac { 7 } { 6 }\)

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Definitions:

Neurotransmitter

Chemical substances released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure.

Ion

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons, essential in a wide array of biological processes.

Acetylcholinesterase

Enzyme found in the synaptic cleft that causes the breakdown of acetylcholine to acetic acid and choline, thus limiting the stimulatory effect of acetylcholine.

Acetylcholine

A neurotransmitter involved in many functions including muscle contraction and the transmission of nerve impulses in the central and peripheral nervous system.