Help me with this pleaseee

1 - B

2 - C

3 - C

4 - C

5- B

6 - C

7 - D

8 - C

9 - A

Step-by-step explanation:

76. b

77. c

78. c

79. c

80. b

81. c

82. d

83. c

84. a

Step-by-step explanation:

Algebra:

FOR EXAMPLE: 2= 5-x

u can move 5 to the other side and it will become 2-5 = -3

so -x=-3 therefore x=3, B

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°