4. A seagull is flying above a cliff 30 feet above sea level. A dolphin is swimming 5 feet below sea level. A
sting ray is moving along the seabed, 30 feet below sea level.
a) Draw and label the animals on a vertical number line.
b) Which number has the least value?
Which number has the greatest value?
c) Which animal is farthest from sea level?
e) What is the distance between the seagull and stingray? Write an expression.