Geometry help will give all points plz plz plz

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?

Don't know how to find x given these segment lengths

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.