Beginning from a depth of 35 feet below the surface, a whale swims

upward and jumps to a height of nearly 17 feet above the surface.

a. Model with Math Use an inequality to model the possible change in the number of feet, r, of the whale's elevation.

b. Solve the inequality. Explain the meaning in terms of the situation.

a. The elevation is 17 feet. b. See the explanation.

Step-by-step explanation:

a:

The whale starts swimming upward from a depth of 35 feet below the surface and jumps to a height of 17 feet above the surface.

Elevation means the height from the surface.

The whale is 17 feet above the surface.

Hence, the whale's elevation, r = 17.

b:

The whale covers a total distance of (17 + 35) = 52 feet from beginning.

Someone can mistakenly think that the elevation is 52 feet.

52 feet is the total covered distance, where as elevation means the height from the surface of the water.

Hence, here the elevation of whale is 17 feet.