Find and Simplify the Difference Quotient of F $$\frac { f ( x + h ) - f ( x ) } { h }$$

Multiple Choice

Find and simplify the difference quotient of f, $$\frac { f ( x + h ) - f ( x ) } { h }$$ $\mathbf { h } \neq 0$ , for the function.
- $$f ( x ) = x ^ { 2 } + 3 x + 7$$

A) $2 x + h + 3$
B) 1
C) $2 x + h + 7$
D) $\frac { 2 x ^ { 2 } + 2 x + 2 x h + h ^ { 2 } + h + 14 } { h }$