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Back to Recognize sequences as functions — Problem 4 · Task Set 6

Exercises: Recognize Sequences as Functions

Work through each section in order. Show your work where indicated.

Grade 9·20 problems·~30 min·Common Core Math - HS Functions·group·hsf-if-a-3
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Fluency Practice

1.

The geometric sequence has first term a(1)=2a(1) = 2 and common ratio r=3r = 3. Use the explicit formula a(n)=a1⋅rn−1a(n) = a_1 \cdot r^{n-1} to find a(4)a(4).