Answer:
Ok what is the problem
Step-by-step explanation:
True
______
A closed circuit basically means everything is connected by wires and for this setup every device receives electricity making this true
Answer:

Step-by-step explanation:
The model shows that there are 40 tiles which were divided into 4 per group. This results into 10 groups. That is:

Therefore, the expression modeled by the arrangement of the tiles is 
Answer:
56+64u
Step-by-step explanation:
distribute the 8
56+64u