Resposta :

Ind
I) f(-4) = 2. (-4) +5 
f(-4) = -8+5
f(-4) = -3

II) f(3) = 2 . (3) +5
f(3) = 6+5
f(3) = 11

III) f(1/3) = 2. [tex] \frac{1}{3} +5[/tex]

f(1/3) = [tex] \frac{2}{3} +5[/tex]

f(1/3) = [tex] \frac{15+2}{3} [/tex]

f(1/3) = [tex] \frac{17}{3} [/tex]
jamesonmagno
F(-4) =2(-4)+5 = -3
F(3) = 2x3+5 =11
F(1/3) = 2(1/3)+5 
          = 2/3+5
          =2+15/3
          =17/3

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