High School

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Let [tex]P = f(t) = 35.8(1.025)^t[/tex] be the population of a town (in thousands) in year [tex]t[/tex].

(a) Describe the town's population in words.

The initial population of the town is ___ people.

(Note: Enter exact values without commas.)

Answer :

The initial population of the town is 35.8 people.

The town's population is modeled by an exponential function P = f(t) = 35.8(1.025)^t, where:

P represents the population of the town in thousands at year t.

1.025 is the growth factor, which is greater than 1. This indicates an exponential growth. In words: The town's population is growing exponentially. Each year, the population increases by a factor of 1.025, which is a 2.5% increase compared to the previous year.

  • Initial Population:

To find the initial population, we need to evaluate the function at t = 0 (year 0):

  • P(0) = 35.8 * (1.025)⁰

Since any number raised to the power 0 equals 1, the initial population is:

P(0) = 35.8 * 1 = 35.8 (thousands).

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