Pls help ASAP i am in math class

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

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?

Explain why the factor 1.5 is broke. into two numbers in the model.