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3 years ago

Find an equation for the nth term of the sequence.

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

6 0

Answer:

a. an = -1 • 4^(n - 1)

Step-by-step explanation:

It's easy see that each term is multiplied by 4 to get the next term, so the common ratio will be 4, that reduces the choices to answers A and B (since C and D use -1 as common ratio). Also, normally a geometric progression uses "n-1", so we'll first try with A to see if it works.

a1 = (-1) * 4^0 = -1 * 1 = -1

a2 = (-1) * 4^1 = -1 * 4 = -4

a3 = (-1) * 4^2 = -1 * 16 = -16

Yes, it works... so the answer is an = -1 • 4^(n - 1)

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Picture below

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<h3>How to draw the graph of an exponential Function?</h3>

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Read more about Graph of Exponential Function at; brainly.com/question/12940982

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