Given `f(x)=2x^{2}-9`, what is the value of `f(5)`?

To find the value of \( f(5) \), we will substitute \( x = 5 \) into the function \( f(x) = 2x^2 - 9 \).

\[ f(5) = 2(5)^2 - 9 \] \[ = 2(25) - 9 \] \[ = 50 - 9 \] \[ = 41 \]

Therefore, \( f(5) = 41 \).