Answer:

Step-by-step explanation:
- standard form is Ax + By = C
- In short, get all the variables on the left and the constants on the right
85% of 142 is 120.7. Rounded to 121. If 91 have already completed training, then 121-91=30
So 30 more employees must complete training.
Volume Formula = Length x Wigth x Highth
I think 0 represents the ground.