If the population of a certain town decreases by 4.5%
each year, we form a geometric sequence with first term equal to 8,500 and r
equal to 0.955.
<span>(a)
</span>The equation is then,
<span> An
= (8,500)(0.955)^n</span>
Where n is the number
of years.
<span>(b)
</span>Substituting 7000 to An and solving for n,
7000 = 8500*(0.955)^n
<span> The
value of n from the equation is 4.2 years. </span>
