I really need help sooner the better!!

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?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?