Answer
$$\frac{31}{40}.$$
Work Step by Step
We have
$$\int_{1/16}^{1} t^{1/4}dt=\frac{1}{5/4}t^{5/4}|_{1/16}^1=\frac{4}{5} -\frac{4}{5} \frac{1}{{16^{5/4}}}\\=\frac{4}{5}-\frac{1}{{40}}=\frac{31}{40}.$$
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.