You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Question: In the rectangular coordinate system, what is the x-intercept of a line passing through (10, 3) and (−6, −5)?

 Option A: 4

 Option B: 2

 Option C: 0

 Option D: −2

 Option E: −4
Option A

Question: If x < y < 0, which of the following must be true?

 Option A: 2xy/3x is a negative integer

 Option B: x-y is a positive integer

 Option C: (-x

 Option D: x/y is a negative integer

 Option E: 2x+y is a negative integer
Option C

Question: 20% of an 30% salt solution is replaced with water. From the resulting solution, again 20% is replaced with water. This step is repeated once more. What is the concentration of salt in the final solution obtained

 Option A: 19.58%

 Option B: 15.36%

 Option C: 20%

 Option D: 9.72%

 Option E: 11.64%

Option B