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PilotLPTM [1.2K]
3 years ago
5

The population of a city is 451,400. The population is expected to decrease at a rate of 3.2% each year.

Mathematics
2 answers:
Serga [27]3 years ago
7 0
It's the first choice, and the 't' is an exponent.
blondinia [14]3 years ago
5 0

Answer:

Find out the what function equation represents the population of the city after t years .

To prove

The population of a city is 451,400. The population is expected to decrease at a rate of 3.2% each year.

This can be represented by exponential decreasing function.

f(t) = a (1 - r)^{t}

Where a is the initial value.

r is the rate in decimal form

t is the time.

Here

a = 451,400

3.2 % is written in the decimal form.

= \frac{3.2}{100}

= 0.032

Put in the formula

f(t) = 451400 (1 - 0.032)^{t}

f(t) = 451400 (0.968)^{t}

Therefore the decrease in the population of the city after t years is represented by

f(t) = 451400 (0.968)^{t}



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