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I need help number 10

1 Answer

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a)

• Initial population: 40

,

• Rate of growth: 13%

Function


f(x)=40\cdot1.13^x

To know which graph represents the function, we have to replace a value, for example, x = 5.


f(5)=40\cdot1.13^5=73.70

As we can see based on the image given, the blue line is the one that approximates most to ( 5, 73 ).

b)

• Initial population: 40

,

• Rate of growth: 17%


g(x)=40\cdot1.17^x

Also, we will replace the value of x = 5.


g(5)=40\cdot1.17^5=87.70

As we can see based on the image given, the red line is the one that approximates most to ( 5, 87 ).

c)

As it is a linear function, this will have the form:


y=mx+b

In this case, b represents the initial population and m represents the rate of change. Therefore...


h(x)=20x+40

And this is represented by the green line (as it is linear).

Answers:

a)


f(x)=40\cdot1.13^x

f( x ) is represented by the blue line.

b)


g(x)=40\cdot1.17^x

g( x ) is represented by the red line.

c)


h(x)=20x+40

h( x ) is represented by the green line.

User Joe Ruello
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