We want to find the
8th term of the given .
To do so, we will start by finding an . Let's recall the .
an=a1⋅rn−1
Now we will substitute the given values,
a1=1 and
r=9, into this formula.
an=1⋅9n−1
To find
an when
n=8, we will substitute
8 for
n in this formula.
an=1⋅9n−1
a8=1⋅98−1
a8=4782969