Creating a Model from a Sequence Quick Check

Question

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Question
The population of an endangered species was estimated to be 240 in 2018. The population has been tracked each year and has been modeled with the geometric sequence 240, 360, 540, 810, . . . . Create a function that models this situation.(1 point)
Responses

f(n)=240(120)n−1
f left parenthesis n right parenthesis equals 240 left parenthesis 120 right parenthesis superscript n minus 1 baseline

f(n)=240+(n−1)12
f left parenthesis n right parenthesis equals 240 plus left parenthesis n minus 1 right parenthesis Start Fraction 1 over 2 End Fraction

f(n)=240(32)n−1
f left parenthesis n right parenthesis equals 240 left parenthesis Start Fraction 3 over 2 End Fraction right parenthesis superscript n minus 1 baseline

f(n)=240(12)n−1

Answer 1

f(n)=240(12)^n-1