Which of the following equations has both 1 and −3 as solutions?
a. x2 – 2x – 3 = 0
b. x2 + 2x – 3 = 0
c. x2 – 4x + 3 = 0
d. x2 + 4x + 3 = 0

Which elements in the set are integers? –8, 3⁄4, √ 18 , 0, √ 16 , 5, –2⁄7, 6 a. –8, 0, 5, 6 b. –8, 0, √ 16 , 5, 6 c. 3⁄4, √ 18 , √ 16 , 5, –2⁄7 d. –8, 0, √ 18 , 5, 6