anonymous
  • anonymous
Evaluate the function rule for the given value. y = 15*3^x , for x = -3
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
A) 5/3 B) 5/27 C) 135 D) 5/9
anonymous
  • anonymous
@Tazmaniadevil
anonymous
  • anonymous
5/9

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More answers

mathstudent55
  • mathstudent55
y = 15*3^x , for x = -3 Replace x with -3. What do you get?
anonymous
  • anonymous
You have \(15 \times 3^{-3}\). In order to change the sign of an exponent, take the reciprocal, i.e. \(3^{-3} = \frac{1}{3^3}\). So now you have\[15\times 3^{-3} = 15\times \frac{ 1 }{ 3^3 } = \frac{15}{3^3}\]Now, evaluate \(3^3\), and simplify the fraction.
anonymous
  • anonymous
15/27 @ospreytriple
anonymous
  • anonymous
and then we simplify
anonymous
  • anonymous
divide them by 3
anonymous
  • anonymous
and we get 5/9
anonymous
  • anonymous
I have about 2 same questions, I'll try to solve them and can u tell me if im right
anonymous
  • anonymous
You are correct. Good job.

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