Question

Se f(x) = 4x+1, então f(-1) + f(0) + f(1) + f(2) é igual a

Answer 1

$f(x)=4x+1$

$f(-1)=4.(-1)+1$

$f(-1)=-4+1$

$f(-1)=-3$

$f(0)=4.(0)+1$

$f(0)=0+1$

$f(0)=1$

$f(1)=4.(1)+1$

$f(1)=4+1$

$f(1)=5$

$f(2)=4.(2)+1$

$f(2)=8+1$

$f(2)=9$

$Portanto...$

$f(-1)+f(0)+f(1)+f(2)=$

   $-3+1+5+9=$

      $-3+15=$

          $+12$

  $Resposta:+12$