Chapter 8.7, Problem 30WE

(a)

To determine

To find: The find the value of $f\left(0\right)$ .

Answer to Problem 30WE

The value of $f\left(0\right)$ is $7$ .

Explanation of Solution

Given:

The given function is $f\left(x\right)=4x+7$ .

Calculation:

Consider the given function is,

  $f\left(x\right)=4x+7$

Then,

  $\begin{array}{c}f\left(0\right)=4\left(0\right)+7\\ =7\end{array}$

(b)

To determine

To find: The find the value of $f\left(x\right)=0$ .

Answer to Problem 30WE

The solution of the function is $x=\frac{-7}{4}$ .

Explanation of Solution

Given:

The given function is $f\left(x\right)=4x+7$

Calculation:

Consider the given function is,

  $f\left(x\right)=4x+7$

Then,

  $\begin{array}{l}4x+7=0\\ x=\frac{-7}{4}\end{array}$