C because you have to multiply the four measures together.
--Answer--
The second one, fourth, and fifth.
--Explanation--
1. - 6.283...
2. 7.142...
3. 6.928...
4. 7.483...
5. 7.874...
The length of the new line, between the given point and the newly-found intersection point, is the distance between the point and the original line. To find the distance, subtract the x and y values to get the x and y displacements. Therefore, there is no specific equation!
I think the answer is 15, because 5 divided by 2 is 2.5. 2.5 times 6 is 15