Answer:
[tex]\frac{\frac{3}{4} mi}{x}[/tex]=[tex]\frac{1 mi}{5,280 ft}[/tex]
Step-by-step explanation:
First find the perimeter of the rectangle to see the total length
2([tex]\frac{1}{8}[/tex])+2([tex]\frac{1}{4}[/tex])
[tex]\frac{3}{4}[/tex]
Then, because you are converting from miles to ft, you can use the ratio of miles/feet to determinte the correct ratio for the perimeter.
The correct ratio is [tex]\frac{1 mi}{5,280 ft}[/tex]
To set these ratios equal to eachother, first see that one side of the equation has miles as the unit, the other side has miles/feet, so you must divide the perimeter by feet to set the ratios equal to eachother.
Therefore, the correct equation is [tex]\frac{\frac{3}{4} mi}{x}[/tex]=[tex]\frac{1 mi}{5,280 ft}[/tex]