you have a sequence where
a = 0.1
r = 1.0077
Now you can write the formulas needed.
In 1985, 10% of Americans had no close friends. On average, this has increased by approximately 0.77% per year
a. Write a formula for the nth term of the arithmetic sequence that models the percentage of Americans with no close friends n years after 1984.
b. If trends shown by the model in part (a) continue, what percentage of Americans will have no close friends in 2011?
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2 answers