Answer all the questions.

1. If a is subtracted from 8, the result is 3.

   1.   ?           a - 8 = 3
   2.   ?           8 - a = 3
   3.   ?           a + 8 = 3
   4.   ?           8 + a = 3

2. The product of 6 and p is 18.

   1.   ?           p + 6 = 24
   2.   ?           p - 6 = 24
   3.   ?           6 × p = 24
   4.   ?           p ÷ 6 = 24

3. h and k are complementary angles.

   1.   ?           h + k = 90°
   2.   ?           h - k = 90°
   3.   ?           h + k = 180°
   4.   ?           h - k = 180°