Find the greatest common factor of 210 and 90

15 point ! ~ see if you know the answer to both you!

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

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $