Work Step by Step
This is a direct application of the Constant Multiple Rule $g'(x)=(-5f(x))'=-5(f'(x))=-5f'(x)$
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.