Find the Equation of the Tangent Line to the Curve $$f ( x ) = x ^ { 2 } + 5 x ; x = 4$$

Multiple Choice

Find the equation of the tangent line to the curve when x has the given value.
- $$f ( x ) = x ^ { 2 } + 5 x ; x = 4$$

A) $y = - 39 x - 80$
B) $y = - \frac { 4 x } { 25 } + \frac { 8 } { 5 }$
C) $y = \frac { x } { 20 } + \frac { 1 } { 5 }$
D) $y = 13 x - 16$