Answer:
8/9 8 to 9
Step-by-step explanation:
the value of r of the geometric series n=11.3(0.8)n-1

General formula for nth term of any geometric series is 
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
with 
The value of r= 0.8
Answer:
36$
Step-by-step explanation: