Answer:
1) -95.
2) 15.
3) The conference center is on floor 5.
Step-by-step explanation:
1) Evaluating gives 
2) Substituting gives 
3) After going 4 floors down, we are on level -4. After going 9 floors up to the desired room, we are on level -4+9=5. So the conference center is on floor 5.
The area of a parallelogram is length x height.
The answer would be C. A = 12 • 8
this is a question from me to you not an answer sorry what class are you taking