Answer:
C
Step-by-step explanation:
The answer is 16x-20. First, you have to distribute 12 and 4 making the equation 12x-48+4x+28. Then, you combine the like terms giving you 16x-20. Hope this helped.
Answer: 3
3,000,000,000
Step-by-step explanation:
Billions have 9 zeros
The answer is definitely -4 1/8
Answer: 
Step-by-step explanation:
Given
The length of each cube is 
If there are 6 cubes placed over each other, then the height achieved by the cubes is