This week in Math we learned about geometric sequences. A geometric sequence is a sequence of numbers where you multiply each number of the sequence by a set number called the common ratio (r) to get the next number.
Ex. 5, 10, 20, 40 …
in this case r=2 because 10/5=2 and also 40/20=2
to find any term in a geometric sequence we use this formula:
So if we wanted to find we would use that formula.
Therefore, .