Answer:
The answer should be: r ≈ 8.21
Answer:

Step-by-step explanation:
we know that
To find out how much more blue fabric than yellow fabric does Marcus need, subtract the quantity of yellow fabric from the quantity of blue fabric
step 1
Convert mixed number to an improper fraction


step 2
Subtract the numbers

Convert to mixed number

About 3,000 books because 105 * 28 = 2940
and 2940 rounded to the nearest thousand is 3000. Hope this helps.
Maybe you can use your gps lololol