Question

Dada a função f(x) = 3x+1, calcule:  f(2)+ f(6)

Answer 1

f(x) = 3x + 1

f(2) = 3.2 + 1
      = 7

f(6) = 3.6 + 1
     = 19

f(2) + f(6) = 7 + 19
              = 26

Answer 2

f(2)=3.2+1
f(2)+1=7

f(6)=3.6+1
f(6)=19

19+7=26