alex877760 alex877760
  • 18-04-2019
  • Mathematics
contestada

If f(x)= 12(2)^x then which of the following represents the value of f(-2)?
(1) -48
(2) 6
(3) 3
(4) -4

Respuesta :

gmany
gmany gmany
  • 18-04-2019

Answer:

(3) 3

Step-by-step explanation:

[tex]f(x)=12(2)^x\\\\f(-2)\to\text{put x = -2 to the equation of the function}\ f(x):\\\\f(-2)=12(2)^{-2}\qquad\text{use}\ a^{-n}=\dfrac{1}{a^n}\\\\f(-2)=12\left(\dfrac{1}{2^2}\right)=12\left(\dfrac{1}{4}\right)=\dfrac{12}{4}=3[/tex]

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