#### Answer

The answer is below.

#### Work Step by Step

My velocity since I started running may be given by $-t^2 +10$. However, there is a domain restriction, for time cannot be negative. Another example is the function $ m = w^2 + 15 w +10$, where m is the amount of the material used and w is the width of the box. This domain is also restricted, for width can never be negative.