document.write( "Question 773630: what is the value for the function F(x)=3*2^x when x=-4 \n" ); document.write( "

Algebra.Com's Answer #473004 by tanjo3(60) $\"\"$ $\"About$

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(1) Substitute x = -4 in F(x).
\n" ); document.write( "F(x) = 3*2^(-4)
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\n" ); document.write( "(2) Recall that a^(-x) = 1/(a^x).
\n" ); document.write( "F(x) = 3
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\n" ); document.write( "(3) 2^4 = 16
\n" ); document.write( "F(x) = 3
\n" ); document.write( "F(x )= 3/16
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