The commission rate is 8%.
Work Step by Step
commission=rate*sales $628=(r)(7850)$ $628\div7850=7850r\div7850$ $0.08=r$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.