64 is the starting number because it is given, and x represents how many rounds there are. 1/4 represents how much of the teams remain after each round.

5 0

3 years ago

If the population of a country increases at a rate of 1.5% annually, and its current population is 430,000, how many years will

Alchen [17]

For this case we have an equation of the form:
$y = A * (b) ^ t
$
Where,
A: initial amount
b: growth rate
t: time in years.
Substituting values we have:
$y = 430000 * (1,015) ^ t
$
By the time the population is triple we have:
$3 * 430000 = 430000 * (1,015) ^ t
$
Rewriting we have:
$3 = (1,015) ^ t
$
Clearing t we have:
$t = log1.015 (3)

t = 73.78876233

t = 73 years$
Answer:
It will take for the population to triple about:
t = 73 years

3 0

3 years ago