Hi I need some help on this late work- numbers 4-15 please?

Which ratio is equivalent to 10: 85

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

1. are the triangles similar and if so why? what is the value of x? show your work.