Answer:

Step-by-step explanation:
Let
x ----> 3-room apartments
200-x ----> 4-room apartments
we know that
To find out how many rooms are there in the complex, sum the number of 3-room apartments multiplied by 3 plus the number of 4-room apartments multiplied by 4
so

Apply distributive property

Combine like terms

Answer:
I believe its C , i took this class
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
it's graphical represent is mistake.
Step-by-step explanation:
uhm you know the excrotery system to the factor
Answer: 3
Step-by-step explanation: QPEX VERIFIED JUST DID IT