8.5 Geometric Sequences

Front

What does r represent?

Back

Common ratio

Front

What does a₁ represent?

Back

First term

Front

Find the common ratio for the geometric sequence. Options: 10, 1/2, 2, 4

Back

2

Front

Is the sequence -432, 72, -12, 2,... geometric?

Back

yes

Front

Next 3 terms in the geometric sequence: 512, 256, 128, ___, ___, ___

Back

64, 32, 16

Front

Write the explicit formula for the geometric sequence. Options: a_n = 4(3)^n-1, a_n = 3(4)^n-1, a_n = -4(3)^n-1, a_n = 3(-4)^n-1

Back

a_n = 3(-4)^n-1

Front

What is the common ratio of the bacteria growth sequence shown in the image?

Back

2

Front

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

Back

4, 20, 100, 500

Front

What is the 14th term of the geometric sequence?

Back

4,782,969

Front

Given the sequence: 125, 25, 5, .... Write the rule a_n using the geometric sequence formula.

Back

a_n = (125)(1/5)^(n-1)