Question

34) Dada a função definida por
a) f(1)
f(x)= 3x+12 calcule.
b) f(3)
c) f(-4)​

Answer 1

BOM DIA !

$f(1) = 3x + 12 \\ 3.1 + 12 \\ 3 + 12 \\ \boxed{f(1) = \red{15}}$

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$f(3) = 3x + 12 \\ 3.3 + 12 \\ 9 + 12 \\ \boxed{f(3) = \red{21}}$

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$f ( - 4) = 3.x + 12 \\ 3. - 4 + 12 \\ - 12 + 12 \\ \boxed{f( - 4) = \red{0}}$

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