Answer
$t=0$
Work Step by Step
A rational function is undefined whenever the denominator equals 0, so we can create the equation $-5t$ = 0. We can easily see that the value that makes this true is t = 0.
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.