Presentation on theme: "Algebra 3 7.3 Geometric Sequences Objectives of this Section Determine if a Sequence Is Geometric Find a Formula for a Geometric Sequence Find the Sum."— Presentation transcript:
Algebra 3 7.3 Geometric Sequences Objectives of this Section Determine if a Sequence Is Geometric Find a Formula for a Geometric Sequence Find the Sum of a Geometric Sequence Solve Annuity Problems
A sequence is geometric when the ratio of successive terms is always the same nonzero number. A geometric sequence is defined recursively as where r is called the common ratio of the sequence.
Determine if the following sequence is geometric 3, 15, 75, 375,... The sequence is geometric with a common ratio of 5.
Amount of an Annuity If P represents the deposit made in dollars at each payment period for an annuity at i percent interest per payment period, the amount A of the annuity after n payment periods is
Suppose Yola deposits $500 into a Roth IRA every quarter (3 months). What will be the value of the account in 25 years assuming it earns 9% per annum compounded quarterly?