Work Step by Step
From part (a), we have Total cost = (Cost/hour) (Driven Hours)+ Annual Fee This gives: Total cost ; $C=8.50t+50$ Here, $t$ is in hours and $C$ is in dollars Now, plugging in $t=20$, we get $C=8.50(20)+50 =\$220$
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.