Write an equation to represent the pattern in the table below.
hours
(h)
salary
(s)
10 $150
15 $225
20 $300
25 $375
h = 15s
s = 15h
s = 25h –10
h = 25s –10

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )