Rubicon ate 1/3 of his granola bar. 2 hours later he ate another 1/6 of the original bar. what fraction of the bar has he eaten?

Which one ? is the answer and how to find this answer

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|