A taxi charges a 3 flat fee plus 2 per mile. If a customer's budget is at most $25, what is the maximum number of miles they can travel?

The cost is $3+2m$ for $m$ miles, and it must not exceed $25: $3+2m\le25$. Subtract $3$: $2m\le22$. Divide by $2$: $m\le11$, so the maximum is $11$ miles, choice J. Check: $3+2(11)=25$. Choice H ($12.5$) divides $25 by $2 without subtracting the flat fee first. Choice G ($14$) and choice F ($9$) do not fit: $14$ miles would cost $31, and $9$ miles would cost $21, which is not the maximum. The flat fee is paid once, before any miles are charged.