The whale swims down 150 feet more. What is the whale's elevation now? Do not include units (ft) in your answer

Answer:

(a) [tex]x = 0[/tex]

(b) [tex]x = -300[/tex]

(c) [tex]x = -450[/tex]

Explanation:

Given

See attachment for complete question

Solving (a): The elevation at the surface level:

Let x represents the elevation

At the surface level, the elevation is 0.

So:

[tex]x = 0[/tex]

Solving (b): Swim down 300ft:

A downward movement will be represented as negative.

So, the new elevation is:

[tex]New = Old - Distance\ Moved[/tex]

Where

[tex]Old = 0[/tex] --- previous value of x

[tex]Distance\ Moved = 300[/tex]

This implies that:

[tex]x = 0 - 300[/tex]

[tex]x = - 300[/tex]

The new elevation is -300ft

Solving (c): Swim down 150ft:

A downward movement will be represented as negative.

So, the new elevation is:

[tex]New = Old - Distance\ Moved[/tex]

Where

[tex]Old = -300[/tex] --- previous value of x

[tex]Distance\ Moved = 150[/tex]

This implies that:

[tex]x = - 300-150[/tex]

[tex]x = -450[/tex]

The new elevation is -450ft

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