Arithmetic Sequences Answers

Select all sequences that are geometric.

Which formula can be used to find the nth term of the sequence 3, 21, 147, … ?

The first term of a sequence is 4 and the common ratio is –2. What is the formula for the sequence based on term number

Which formula can be used to find any term, n, of the sequence

Which formula can be used to find the nth term of the sequence 0.8, 0.72, 0.648, … ?