The answer to question 18 is C. and the answer to question 19 is B
I got 20,737 but I could be wrong so I will attach my algorithm and work.
Answer:
Adjacent
Step-by-step explanation:
Because supplementary angles make 180 degrees, complementary make 90 degrees, vertical angles are pairs of opposite angles made by two intersecting lines.
Answer:
16
Step-by-step explanation:
Following the order of operations (PEMDAS), combine the terms in your parentheses:

Remember that we follow the order of operations from left to right.
Divide 8 into 2:

Multiply:

The answer is D. An agreement from everyone on the collaborative team to share equally in the work load.