A. A whale is at the surface of the ocean to
breathe.
What is the whale's elevation?
b. The whale swims down 300 feet to feed.
What is the whale's elevation now?
C. The whale swims down 150 more feet
more. What is the whale's elevation now?
d. Plot each of the
three elevations
as a point on a
vertical number
line. Label each
point with its
numeric value.