Answer:
The area that was not painted is 
Step-by-step explanation:
step 1
Find the area of the rectangle
we know that
The area of a rectangle is equal to

In this problem we have


substitute

step 2
Find the area that was painted

step 3
Find the area that was not painted
Subtract the area that was painted from the total area of rectangle
so

I think it would be $1,368....hope its right...
Answer:
c
Step-by-step explanation:
c
Answer:
For 7a its C i think And for 7b is 3:2
Step-by-step explanation:
hope this helps
Answer:
Area = Length × width
16 = (3x +2 ) × ( x)
16 = 3x² +2x
3x² +2x -16=0
( 3x+8 ) ( x -2 ) =0
3x +8=0 —> 3x = – 8 —> x = – 8/3 —> x = – 2.6
x-2=0 —> x = 2
I hope I helped you^_^