Exercise 32 Page 72

We are told that this solution set contains x=p. This means that p is any number less than or equal to 20. p≤ 20 To create another inequality that also contains the solution x=p, we can start from the solution set we already found and add a positive number on the right-hand side of the inequality. For example, we can add 4. x≤20 + 4 ⇒ x≤24 We know that p is any number less than or equal to 20. Therefore, p also satisfies our new inequality.