Answer:
-6
Step-by-step explanation:
We can first change 4% to a decimal by dividing by 100:

Then we can multiply this by 3.5km:

So now we know that 4% of 3.5km is 0.14km.
The answer is C. Hope this helps!
<h3>Simplifying
</h3>
5.5 + -1x = -4.5 + -1x
<h3>
Add 'x' to each side of the equation.
</h3>
5.5 + -1x + x = -4.5 + -1x + x
<h3>
Combine like terms: </h3>
-1x + x = 0
5.5 + 0 = -4.5 + -1x + x
5.5 = -4.5 + -1x + x
<h3>
Combine like terms:</h3>
-1x + x = 0
5.5 = -4.5 + 0
5.5 = -4.5
<h3>
Solving:
</h3>
5.5 = -4.5
<h3>
This equation is invalid, the left and right sides are not equal, therefore there is no solution.</h3><h3 />
Hope this helps!