Answer:
Option B.
Step-by-step explanation:
It is given that on a map 6 inches represents a distance of d miles.
We need to find the distance, in inches which represents the distance of d+1 miles on the map.
Let x be the distance, in inches which represents the distance of d+1 miles on the map.
[tex]\dfrac{6}{d}=\dfrac{x}{d+1}[/tex]
Multiply both sides by (d+1).
[tex]\dfrac{6}{d}\times (d+1)=\dfrac{x}{d+1}\times (d+1)[/tex]
[tex]\dfrac{6(d+1)}{d}=x[/tex]
The expression [tex]\dfrac{6(d+1)}{d}[/tex] represents the distance of d+1 miles on the map.
Therefore, the correct option is B.