the value of r of the geometric series n=11.3(0.8)n-1
[tex]an=11.3(0.8)^{n-1}[/tex]
General formula for nth term of any geometric series is [tex]a_n=a_1(r)^{n-1}[/tex]
Here 'r' is the common ratio
a_1 is the first term of the series
Now we compare the given formula with general formula
Compare [tex]an=11.3(0.8)^{n-1}[/tex] with [tex]a_n=a_1(r)^{n-1}[/tex]
The value of r= 0.8
