![\begin{gathered} 350\operatorname{km}=350,000m \\ 2m=3218m \\ 240^(\doubleprime)=6.096m \end{gathered}]()
1) Let's tackle this question with the following procedure for each conversion:
Metric Conversions:
350 km
Or Simply:
![350\operatorname{km}=350*1000=350,000m]()
b) 2 miles
Considering that 1 mile is equivalent to 1609 meters then we can write:

c) 240"
One inch is 2.54 centimeters. 1 centimeter is 1/100 meters so we can write out the following:
![\begin{gathered} 1^(\doubleprime)=2.54\operatorname{cm}=(1)/(100)*2.54=0.0254m \\ 0.0254m------1\~ \\ x---------\text{ 240} \\ x=240\cdot0.0254 \\ x=6.096m \end{gathered}]()
Note that all conversions are proportional. And those are the answers.