Help please we are doing escape room and i tried every thing directions : calculate the area of each figure below .To break the code puzzle two you need to find the mean of all your answers

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?