Ihave done this question multiple times and still cnat seem to get it right could someone explain this?

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

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?