Geometric Sequences

Geometric Sequences

Which sequence does not belong?

Geometric

Explicit Formula

Write a formula for the geometric sequence represented by this image

Multiple Choice

Which exponential function represents the pattern in this picture? Focus only on the gray triangles, not the white space.

• a_n = 4(3)^n-1

• a_n = 3(3)^n-1

• a_n = 3(4)^n-1

• a_n = 4(4)^n-1

We Try: 125, 25, 5, ...

Multiple Choice

What is the formula for the sequence below?

2, 4, 8, …

• f(n) = 2(4)^n-1

• f(n) = 4(2)^n-1

• f(n) = 2(2)^n-1

• f(n) = 8(1/2)^n-1

We Try:

Multiple Choice

Pick the geometric function that matches with the pattern in this table.

• a_n = 5(2)^n-1

• a_n = 5(10)^n-1

• a_n = 5(2)ⁿ

• a_n = 2(5)^n-1

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