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:
The first choice
Step-by-step explanation:
h=-3
hope it helps
There are 16 oz in a pound.
I hope this helps !