If we divide the area we have to cover by the area of a piece, we will get the number of pieces needed:
<span>l ≤ 12
2l + 2w < 30
the second and fourth option are saying she can make the length longer than twelve and the third option forgets to double the length and width so it is accurate. The first option is the right answer.</span>
Divide each number by 3
Then subtract the numbers you got from the answers that you divided
Divide it by 25 witch is the height then find the square root
<u>Domain</u> is the <u>x value</u> (here,y) while the <u>range</u> <u>value</u> is <u>y</u> (x,here).
The image is blurry for me but I have explained how to complete this problem, so it should be easier for you.