Lesson 17 Practice Problems
1. Jada is planning a kayak trip. She finds an expression for the time, I(s), in 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.
a. What would be a more appropriate
domain for Jada to use instead?
b. What is the approximate speed of
the current if her trip takes 6 hours?
YA
10
8
6
4
2
-4
-6
-8
-10
-12
y = T(s)
1
1