Exploring the Explicit Formula of Geometric Sequences

What does 'a sub 1' represent in the explicit formula of a geometric sequence?

• The common ratio

• The first term

• The exponent

• The last term

In the explicit formula, what does 'R' stand for?

• The last term

• The common ratio

• The exponent

• The first term

How do you find the common ratio in a geometric sequence?

• Add the first term to the second term

• Divide the second term by the first term

• Divide the first term by the second term

• Multiply the first term by the second term

What is the common ratio in the sequence 2, 10, 50?

• 2

• 5

• 50

• 10

What is the explicit formula for the sequence 4, 12, 36, 108?

• a sub N = 12 * 4^(n-1)

• a sub N = 36 * 3^(n-1)

• a sub N = 108 * 4^(n-1)

• a sub N = 4 * 3^(n-1)

How do you find the 7th term in a geometric sequence using the explicit formula?

• Replace n with 6

• Replace n with 5

• Replace n with 7

• Replace n with 8

What is the 7th term in the sequence 4, 12, 36, 108?

• 729

• 2916

• 2187

• 243

What is the common ratio in the sequence 72, 36?

• 1/2

• 3

• 2

• 1/3

What is the explicit formula for the sequence 72, 36?

• a sub N = 72 * (1/2)^(n-1)

• a sub N = 36 * (1/2)^(n-1)

• a sub N = 72 * 2^(n-1)

• a sub N = 36 * 2^(n-1)

What is the 11th term in the sequence 72, 36?

• 0.07

• 0.09

• 0.5

• 0.1