Questions 7, 8, 13 and 14 Please answer with clear instructions so that i can apply this to other questions
thx

Find the greatest common factor of 28 and 35

The la dodgers hit the most homeruns in 2014. the number of homeruns accounted for 6% of the entire major leauge baseball homerun count. if 583 total homeruns were hit, approximately how many did the la dodgers hit

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