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icang [17]
3 years ago
8

In 2009, there were 1570 bears in a wildlife refuge. In 2010, the population had increased to

Mathematics
1 answer:
natita [175]3 years ago
7 0

Answer:

8,101\ bears

Step-by-step explanation:

we know that

In this problem we have a exponential function of the form

y=a(b)^{x}

where

x ----> is the number of years since 2009

y ----> is the population of bears

a ----> is the initial value

b ---> is the base

step 1

Find the value of a

For x=0 (year 2009)

y=1,570 bears

substitute

1.570=a(b)^{0}

a=1.570\ bears

so

y=1.570(b)^{x}

step 2

Find the value of b

For x=1 (year 2010)

y=1,884 bears

substitute

1,884=1.570(b)^{1}

b=1,884/1.570

b=1.2

The exponential function is equal to

y=1.570(1.2)^{x}

step 3

How many bears will there be in 2018?

2018-2009=9 years

so

For x=9 years

substitute in the equation

y=1.570(1.2)^{9}

y=8,101\ bears

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