Question

Dada a função f (×)=2×-3 , determine o valor de f(5)

Answer 1

$\large \boxed{ \begin{array}{l} \rm \: f(x) = 2x - 3 \\ \rm \: f(5) = 2.(5) - 3 \\ \rm \: f(5) = 10 - 3 \\ \rm \: f(5) = 7\end{array}}$