The area of square flake of gold is 
<h3><u>Solution:</u></h3>
Given that width of square flake of gold is
millimeter
To find : Area of square flake
Since gold flake is in shape of square, we can use area of square formula
<em><u>The formula for area of square is given as:</u></em>

where "s" is the length of one side

Hence , the calculated area of flake is 
Yes you do because you cannot subtract 7 from 6.
So the original area is 300*150 (or 45000 ft^2), but now the new area is (300+3y)(150+3y).
The polynomial in standard form would be 45000+900y+450y+9y^2=45000+1350y+9y^2
But the proper way to write it is 9y^2+1350y+45000
When y=4, we get 9(4^2)+1350(4)+45000=9(16)+54000+45000=144+99000=99144
So the new area would be 99144 ft^2
Hope this helped!
Answer:
$162
Step-by-step explanation:
$1200 x .045 = $54 x 3 years = $162