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mart [117]
3 years ago
14

Exponential Growth/Decay Plz help!!!

Mathematics
1 answer:
ollegr [7]3 years ago
4 0

Answer:

a) 82.

b) So a growth factor of 0.025

c) 2.5%.

d) f(5) = 93, which means that the population of the island on January 1st 2026 is of 93.

Step-by-step explanation:

Exponential equation of population growth:

The exponential equation for population growth has the following format:

f(x) = x(0)(1+r)^x

In which x(0) is the initial value and r is the growth factor, as a decimal.

In this question:

In x years after 2021:

f(x) = 82(1.025)^x

a)

This is f(0). So

f(0) = 82(1.025)^0 = 82

So 82.

b)

We have to find r. So

1 + r = 1.025

r = 1.025 - 1 = 0.025

So a growth factor of 0.025.

c)

Growth factor multiplied by 100%.

So 0.025*100% = 2.5%.

d)

f(5) = population in 5 years after January 1st 2021, that is, January 1st 2026.

f(5) = 82(1.025)^5 = 93

f(5) = 93, which means that the population of the island on January 1st 2026 is of 93.

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