Question

the cost of a filed trip is $220 plus $7 per student. if the school can spend at most $500, how many students can go on a field trip

Answer 1

If the field trip itself costs $220, then that will be our set price. 

500 - 220 = 280

280 (remaining dollars) divided by 7 (students) = 40

40 students can be taken on the trip. 

Hope I was able to help! :)