The inequality expression to represent the situation is m ≤ 7
Inequalities are expressions that are not separated by an equal sign.
If Charmain must run a mile in 7 minutes or less to beat her best time, this can be expressed in inequality form as;
m ≤ 7 where:
The graph of the inequality expression is as shown below:
Learn more on inequality graph here: https://brainly.com/question/24372553