Use NDER on a Calculator to Find the Numerical Derivative $$f ( x ) = x ^ { 2 } + 5 x \text { at } x = 4$$

Use NDER on a calculator to find the numerical derivative of the function at the specified point.
- $$f ( x ) = x ^ { 2 } + 5 x \text { at } x = 4$$

A) 13
B) 21
C) 9
D) 3