Final answer:
Mark appears to have made a mistake as his steps do not logically demonstrate how to solve a one-step inequality. Proper solving requires eliminating terms to simplify and checking the solution for reasonableness.
Step-by-step explanation:
The student's question involves solving a one-step inequality. From the provided steps, it seems that Mark may have made a mistake as the steps do not follow a logical progression for solving inequalities.
Step 1 indicates a numerical comparison (-7 > -6) which is incorrect. Step 2, x² - 13, does not show a complete inequality and lacks a clear connection to Step 1.
To solve an inequality correctly, one should start with a given inequality and eliminate terms wherever possible to simplify the algebra. After solving the inequality, it is crucial to check the answer to ensure it is reasonable using known mathematical rules or by substituting back into the original inequality.