A city has a population of 260,000 people. Suppose that each year the population grows by 9%. What will the population be after 9 years?Use the calculator provided and round your answer to the nearest whole number.people
Question
A city has a population of 260,000 people. Suppose that each year the population grows by 9%. What will the population be after 9 years?Use the calculator provided and round your answer to the nearest whole number.people
Solution
To calculate the population after 9 years with a growth rate of 9% per year, you can use the formula for exponential growth:
P = P0 * (1 + r)^t
where: P is the future population, P0 is the initial population, r is the growth rate (in decimal form), and t is the time in years.
Here, P0 = 260,000, r = 9/100 = 0.09 (to convert percentage to a decimal), and t = 9.
Substituting these values into the formula gives:
P = 260,000 * (1 + 0.09)^9
Now, calculate the value inside the parentheses:
1 + 0.09 = 1.09
Then raise this to the power of 9:
1.09^9 ≈ 2.3674
Finally, multiply this by the initial population:
P = 260,000 * 2.3674 ≈ 615,124
So, the population of the city will be approximately 615,124 people after 9 years, rounded to the nearest whole number.
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