Question 117209

{{{f(x)=2x+5}}} Start with the given function.



{{{f(-1)=2(-1)+5}}} Plug in {{{x=-1}}}. In other words, replace each x with -1.



{{{f(-1)=-2+5}}} Multiply 2 and -1 to get  -2



{{{f(-1)=3}}} Now combine like terms