Jada is planning a kayak trip. She finds an expression for \(T(s)\), the number of hours it takes her to paddle 10 kilometers upstream, in terms of \(s\), the speed of the current in kilometers per hour. This is the graph Jada gets if she allows \(s\) to take on any value between 0 and 7.5.

1. What would be a more appropriate domain for Jada to use instead?
2. What is the approximate speed of the current if her trip takes 6 hours?

A cylindrical can needs to have a volume of 6 cubic inches. A label is to go around the side of the can. The function \(S(r)=\frac{12}{r}\) gives the area of the label in square inches, where \(r\) is the radius of the can in inches.

1. As \(r\) gets closer and closer to 0, what does the behavior of the function tell you about the situation?
2. As \(r\) gets larger and larger, what does the end behavior of the function tell you about the situation?