Help pls ayuda pls

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?

How is this equation completed? i cannot find any examples in the book.