For this case we have an equation of the form:
[tex] y = A * (b) ^ x
[/tex]
Where,
A: initial amount
b: growth rate
x: time in years
Substituting values we have:
[tex] y = 193 * (1.58) ^ x
[/tex]
For the year 2008 we have:
[tex] x = 2008 - 1996
x = 12
y = 193 * (1.58) ^ {12}
y = 46713.49403[/tex]
Round to the whole whole integer:
[tex] y = 46714
[/tex]
Answer:
there were 46714 cellphone users in 2008
