Keenan paid the following amounts for his cell bill from January to April: $25, $26.25, $27.56, $28.94. Write a rule to represent the amount paid each month and find how much he will pay in November.

$$a_n=25\left(1.05\right)^{\left(n-1\right)}$$ He'll pay $40.72 in November.

$$a_n=25\left(1+1.05\right)^{\left(n-1\right)}$$ He'll pay $32770.16 in November.

$$a_n=25\left(1.25\right)^{\left(n-1\right)}$$ He'll pay $232.83 in November.

$$a_n=25\left(1.05\right)^n$$ He'll pay $42.76 in November.

Unit 6 Review

Authored by Angela Frye

Mathematics

9th Grade

15 Questions

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MULTIPLE CHOICE QUESTION

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Unit 6 Review

Is this graph linear or exponential?

An architect is designing a tapered office tower where the ground floor (floor 0) is the largest and the floor space is reduced by 7% per floor. Is this an example of an exponential growth or exponential decay?

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