3. rational number
4.3x/5
5.12x+6
The decimal form of the answer to that expression is
34.75
Answer: 1400
Step-by-step explanation: you add 40 and 30 then you times it by 20 because it said " what is the area of the part that's painted blue" it's trying to throw you off by having the other numbers by the window and the door.
