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

(a)
`x = 0`

(b)
`x = -300`

(c)
`x = -450`

Step-by-step 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