Given the function
f(x)={4x+9x<04x+18x0\displaystyle {f{{\left({x}\right)}}}={\left\lbrace\begin{array}{cc} {4}{x}+{9}&{x}<{0}\\{4}{x}+{18}&{x}\geq{0}\end{array}\right.}

Calculate the following values:
f(1)=\displaystyle {f{{\left(-{1}\right)}}}=