## College Algebra 7th Edition

The sequence is geometric. The common ratio is $r=1.1$.
A geometric sequence has a common ratio $r$. The common ratio is multiplied to the current term to get the next term of the sequence. The common ratio is equal to the the quotient of a term and the term before it. Solve for the ratio of each pair of consecutive terms to obtain: $\dfrac{1.1}{1.0} = 1.1 \\\dfrac{1.21}{1.1}=1.1 \\\dfrac{1.331}{1.21} =1.1$ The consecutive terms have a common ratio so the sequence is geometric. The common ratio is $r=1.1$.