7.7 Geometric Sequences - Classwork

Front

Is this sequence Arithmetic, Geometric, or Neither? 2, 9, 7, 14, 12, 19, ...

Back

Neither

Front

What is the common ratio for the sequence:
28, 14, 7, 3.5...

Back

1/2

Front

Find the common ratio: 4, -16, 64, -256, ...

Back

r = -4

Front

Find the common ratio for the following geometric sequence: 7, -7, 7, -7, ...

Back

-1

Front

Find the next three terms: -4, -12, -36, -108, ...

Back

-324, -972, -2916

Front

Explicit rule for the general term of the sequence 5, 15, 45, . . . ?

Back

a_n = 5(3)^n-1

Front

Write the explicit formula for the geometric sequence: 10, 20, 40, 80, ...

Back

a_n = 10(2)^n-1

Front

Write the explicit rule for the geometric sequence: 2, -12, 72, ...

Back

a_n = 2(-6)^n-1

Front

Write the explicit formula for the following geometric sequence: 3, -12, 48, -192, ...

Back

a_n = 3(-4)^n-1

Front

Find the first four terms of the sequence given the rule:
a_n = 4(5)^n-1

Back

4, 20, 100, 500