Chapter 8, Problem 12PSQ

To determine

To solve:

The given inequality.

Answer to Problem 12PSQ

The solution for our given inequality would be $m>27$ and in interval notation $(27,\infty )$ .

Explanation of Solution

Given:

An inequality:

  $m-6>21$ .

Concept used:

To solve an inequality, we use opposite operations as we use to solve an equation. When we divide or multiply both sides of an inequality by any negative number, it reverses the inequality.

Calculation:

We will solve our given inequality using opposite operations as shown below:

  $\begin{array}{l}m-6>21\text{(Given inequality)}\\ m-6+6>21+6(\text{Adding }6\text{}\text{ on both sides)}\\ m>27\end{array}$

Therefore, the solution for our given inequality would be all values of mgreater than 27. The solution of our given inequality in interval notation would be $(27,\infty )$ .

Since 27 is not a solution of our given inequality, so we will have an open dot at $m=27$ . Upon graphing solution of our given inequality, we will get: