Question

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

Answer 1

Answer:

(a) $x = 0$

(b) $x = -300$

(c) $x = -450$

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:

$x = 0$

Solving (b): Swim down 300ft:

A downward movement will be represented as negative.

So, the new elevation is:

$New = Old - Distance\ Moved$

Where

$Old = 0$ --- previous value of x

$Distance\ Moved = 300$

This implies that:

$x = 0 - 300$

$x = - 300$

The new elevation is -300ft

Solving (c): Swim down 150ft:

A downward movement will be represented as negative.

So, the new elevation is:

$New = Old - Distance\ Moved$

Where

$Old = -300$ --- previous value of x

$Distance\ Moved = 150$

This implies that:

$x = - 300-150$

$x = -450$

The new elevation is -450ft