Answer:
An expression for the number of miles Jessica rode is, 9 + r
Step-by-step explanation:
Here, r represents the number of miles Roger rode.
Given the statement: Jessica rode 9 miles farther than Roger rode.
"Farther" means greater distance from something.
"9 miles farther than Roger rode" means 9 + r
then;
the equation of the statement become:
[tex]\text{Number of miles Jessica rode} = 9+ r[/tex]
Therefore, an expression for the number of miles Jessica rode is, 9 + r