PLZ HELP IM BEING TIMED AND I DONT GET THIS PROBLEM

Arace is 10 kilometers long.markers will be placed at the beginning and end of the race course and at each 500 meter mark.how many markers are needed to mark the course for the race?

Jackson earns $25 per hour as a tutor at the college library. he set a weekly spending budget of $130 each week and puts the remaining money in his savings account. how many hours must he work this week to have at least an extra $50 to put in his savings account

B. jan surveyed her friends to find their favorite season. she recorded jhi ii for summer. how many people chose summer as their favorite season?