Write the First Four Terms of the Geometric Sequence with the Given

question 9

Multiple Choice

Write the first four terms of the geometric sequence with the given first term, a1, and common ratio, r.
- $$a _ { 1 } = - \frac { 2 } { 5 } , r = - 4$$

• A) \(= \frac { 2 } { 5 } , \frac { 8 } { 5 } , - \frac { 32 } { 5 } , \frac { 128 } { 5 } , \ldots\)
• B) \(- \frac { 2 } { 5 } , \frac { 32 } { 25 } , \frac { 32 } { 125 } , \frac { 512 } { 625 } , \ldots\)
• C) \(- \frac { 2 } { 5 } , \frac { 8 } { 5 } , \frac { 32 } { 5 } , \frac { 128 } { 5 } , \ldots\)
• D) \(= \frac { 2 } { 5 } , \frac { 8 } { 25 } , \frac { 16 } { 125 } , \frac { 128 } { 625 } , \ldots\)

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Definitions:

Postsynaptic Membrane

The term describes the part of a neuron that receives signals from another neuron at a synapse.

Synaptic Cleft

The synaptic cleft is the narrow gap between the terminal button of a neuron and the membrane of another neuron or muscle cell, through which neurotransmitters are released.

Concentration Differences

Variations in the amount of a particular substance across different spaces or mediums, often leading to diffusion.

Higher Concentration

Refers to a situation where there is a greater amount of solute per unit volume of solvent in one part of a solution or mixture compared to another.