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Find f(-2) for (x) = 3 . 2^x
O A. -36
O B. -12
O c.1/36

O D. 3/4

Find f(-2) for (x) = 3 . 2^x O A. -36 O B. -12 O c.1/36 O D. 3/4-example-1

2 Answers

5 votes


\\ \rm\Rrightarrow f(x)=3.2^x

  • Put -2


\\ \rm\Rrightarrow f(-2)


\\ \rm\Rrightarrow 3.2^(-2)


\\ \rm\Rrightarrow 3(1/4)


\\ \rm\Rrightarrow 3/4

User Kyle Coots
by
7.7k points
10 votes


\sf f(x) = 3 \ * \ 2^x

insert x = -2


\sf f(-2) = 3 \ * \ 2^(-2)


\sf f(-2) = 3 \ * \ (1)/(4)


\sf f(-2) = (3)/(4)

option D. 3/4 will be the correct answer.

User Stefan Van Gastel
by
8.0k points

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