Given $f(x)=8x^2-7x+12$

A$)$ Firdd $f(x+h)$ and SIMPLIFY.

$f(x+h)=$

B$)$ Find $f(x+h)-f(x)$ and SIMPLIFY.

$f(x+h)-f(x)=$

$$

C$)$ Find $\frac{f(x+h)-f(x)}{h}$ and SIMPLIFY.

$\frac{f(x+h)-f(x)}{h}=$

D$)$ Find $\underset{h0}{lim}\frac{f(x+h)-f(x)}{h}$ and SIMPLIFY. This is $f^{\text{'}}(x).$

$\underset{h0}{lim}\frac{f(x+h)-f(x)}{h}=$

$$

E$)$ Evaluate $f^{\text{'}}(9)$

$f^{\text{'}}(9)=$