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Solnce55 [7]
2 years ago
14

If someone can solve this i will give brainliest

Mathematics
1 answer:
bezimeni [28]2 years ago
7 0

Answer:

f(-7)= -21

f(13)= 99

Step-by-step explanation:

Find f(-7) and f(13) using this equation f(x)=3(2x+7).

To find f(-7) plug in -7 into all the x values in the equation.

f(-7)=3(2(-7)+7)

Multiply 2 and -7.

f(-7)=3(-14+7)

Add -14 and 7.

f(-7)=3(-7)=-21

For f(13) plug in 13 to all the x values.

f(13)=3(2(13)+7)

Multiply 2 and 13.

f(13)=3(26+7)

Add 26 and 7.

f(13)=3(33)=99

Hope this helps!

If not, I am sorry.

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Using an exponential function, it is found that it takes 5.42 years for the car to halve in value.

<h3>What is an exponential function?</h3>

A decaying exponential function is modeled by:

A(t) = A(0)(1 - r)^t

In which:

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In this problem, the car depreciates 12% a year in value, hence r = 0.12 and the equation is given by:

A(t) = A(0)(0.88)^t.

It halves in value at t years, for which A(t) = 0.5A(0), hence:

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More can be learned about exponential functions at brainly.com/question/25537936

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