Describe the translation from f ( x ) = I x I... to f ( x ) = I x - 1 I + 11.
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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
For a non-resident:
For a resident:
We want to know the number of days such that the two costs are equal ie
To do this set the two costs equal to each other:
And solve for d:
The costs will be equal when a resident and a non-resident each use the beach for 12 days.