[tex]\text{Hello there!}\\\\\text{In this question. we're plugging in -6 to the n value}\\\\\text{We're plugging it in to:}\,\,f(n) = 3n + 2\\\\\text{Plug it in}\\\\f(n) = 3(-6)+2\\\\\text{Now, you solve}\\\\f(n) = 3(-6)+2\\\\\text{Multiply 3 and -6}\\\\f(n) = -18+2\\\\\large\boxed{f(-6)=-16}\\\\\text{I hope this helps!}\\\text{Best regards,}\\\text{MasterInvestor}[/tex]