Find $\lim _{h \rightarrow 0} \frac{f(x+h)-f(x)}{h}$ For $f(x)=-4+7 x$

Multiple Choice

Find $\lim _{h \rightarrow 0} \frac{f(x+h) -f(x) }{h}$ for $f(x) =-4+7 x$ .

A) -7
B) -11
C) 7
D) -4
E) limit does not exist