SOLUTION: what is the value for the function F(x)=3*2^x when x=-4

SOLUTION: what is the value for the function F(x)=3*2^x when x=-4

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Question 773630: what is the value for the function F(x)=3*2^x when x=-4
Answer by tanjo3(60) (Show Source): You can put this solution on YOUR website!
(1) Substitute x = -4 in F(x).
F(x) = 3*2^(-4)

(2) Recall that a^(-x) = 1/(a^x).
F(x) = 3

(3) 2^4 = 16
F(x) = 3
F(x )= 3/16

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