Answer:
The shaded area is 
Step-by-step explanation:
we know that
The shaded area is equal to the area of the large square minus the area of the two smaller squares
so

Calculate the shaded area
Remember that

substitute

Answer:
13 Boxes with $41 left over
Step-by-step explanation:
$600/$43 = 13.9 (so she can buy 13 boxes of light fixtures)
$43 x 13 = $559
$600-$559=$41 left over
Answer:
6
Step-by-step explanation:
16.33333 (just put a line over the 3 because it just keeps on going and thats what the line shows)
Answer:
13
Step-by-step explanation:
6-(-7)=13