The answer to your question is 114
To determine how much of the wall is blue we first need to find its area. The wall is a rectangle, then its area is the product of its height and length:

Hence, the area of the wall is 140 square ft. To determine how much of the wall is already painted we multiply this by 1/2, then:

Therefore, 70 square ft are blue.
Answer:
y= -3x+6
Step-by-step explanation:
I've answered this before, but only partially. I'm not sure about the second part, but I think the first one is 10