248 if i did my calculations correct because you already know kim traveled for 3.5 hours and got 217 miles traveled in that time so if you take 217 and divide it by 3.5 you get 62 and then you would take 62 and times it by 4 and your answer would be 248
4+3x is what it sound like. I hope this helps. :)
Step-by-step explanation:
just take -4.5 the right side