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calculate the value of the function f x 3x 4x considering that x is equal to 4

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Calculate the value of the function f(x)=3x+4x considering that "x" is equal to -4

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Answer to a math question Calculate the value of the function f(x)=3x+4x considering that "x" is equal to -4

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f(x) = 3x + 4x = 7x f(x) = 7x cuando x = -4 f(-4) = 7 * -4 = -28

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