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What is the value of f(x) = 3x - 12 for x = 9

What is the value of f(x) = 3x - 12 for x = 9
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What is the value of f(x) = 3x - 12 for x = 9

User Dominick
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If f(x) = 3x - 12 and x = 9

then substitute 9 in place of x

f(9) = 3(9) - 12

f(9) = 27 - 12

f(9) = 15

User Timetrax
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