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
