Hagrid
Answered

Which sequence is modeled by the graph below?

an = one third(27)n − 1


an = 27(one third)n − 1


an = one third(3)n − 1


an = 3(one half)n − 1

Which sequence is modeled by the graph below? an = one third(27)n 1 an = 27(one third)n 1 an = one third(3)n 1 an = 3(one half)n 1 class=

Verified Answer :

MissPhiladelphia

From the coordinates, we can name out the following terms
a2 = 1
a3 = 3
a4 = 9

The terms belong to a geometric progression with a common ratio of 3.
Solving for the first term or a1
a2 = a1 r^(n-1)
1 = a1 (3)^!
a1 = 1/3

So, the sequence has the equation
an = (1/3) (3)^(n-1)

The answer is the THIRD OPTION.

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