Answer:
Step-by-step explanation:
There is an increment of 21% on yearly basis.
In 1982, the number of starbucks were 5.
In 1983, the number of starbucks will be [tex]5\times \frac{121}{100}[/tex].
In 1984, The number will become [tex]5\times\frac{121}{100} \times\frac{121}{100} = 5\times (\frac{121}{100} )^{2}[/tex].
In the year of X, the number of starbucks will be [tex]5\times(\frac{121}{100} )^{t}[/tex], where t = X - 1982.
In 2015, t = 2015 - 1982 = 33.
The number of starbucks in 2015 is [tex]5\times(\frac{121}{100} )^{33} = 2697[/tex].
