Please help me ASAP please

Answer:
31x=217 then x=7
Step-by-step explanation:
you begin by multipling x by the numbers of days that they have in order to complet the needed miles and set that equal to the number of miles. Then to solve dived 217 by 31. This gives 7 miles per day, every day for 31 days in order to get the gaol of 217 miles. Hope this helps!