Please help with is im so confused!​

Which system of linear inequalities is represented by the graph?

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?