Chapter 8.1, Problem 1PE

a. Given the functions f and g, the function $\left(f+g\right)\left(x\right)=\_\_\_\_\_\_\_+\_\_\_\_\_\_\_\_.$

b. Given the functions f and g, the function $\left(\frac{f}{g}\right)\left(x\right)=\frac{f\left(x\right)}{\boxed{}}$ , provided $\_\_\_\_\_\_\_\ne 0$ .

c. The function f composed with g is defined by the rule $\left(f\circ g\right)\left(x\right)=\_\_\_\_\_\_\_.$