9 . If one of the following choices is the solution to the pair of equations
4 x + ky = 15 and x – ky = –25, which one is it?(A) x = –3 and y = –5
(B) x = –2 and y = 3
(C) x = 0 and y = –2
(D) x = 2 and y = 3
(E) x = 3 and y = 510 . How many integers are in the solution set of |4x +
3| < 8?(A) None
(B) Two
(C) Three
(D) Four
(E) Infinitely many