A library has 300 feet of shelves for books. The library will increase the number of feet of shelves by 18%.
A How many feet of shelves are being added?

54

Step-by-step explanation:

Well, divide 300 by 100, which gets you 3. So 3 feet of book shelves = 1%

So 3x18=54

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4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80