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german
4 years ago
9

Find f(-2) for f(x)=2(4)^x

Mathematics
2 answers:
larisa86 [58]4 years ago
7 0

Answer:1/8

Step-by-step explanation:

lesya692 [45]4 years ago
6 0
For this case we have the following exponential function:
 f (x) = 2 (4) ^ x

 To find the value of f (-2) what we must do is substitute the value of x = -2 in the given function.
 We have then:
 f (x) = 2 (4) ^{-2}
 Then, rewriting the function we have:
 f (x) =  \frac{2}{4^2}
 f (x) =  \frac{2}{16}
 Finally, simplifying we have:
 f (x) = \frac{1}{8}
 Answer:
 
The value of f (-2) is:
 f (x) = \frac{1}{8}
 option B
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