8 is the answer to your question
Inequalities are used to relate unequal expressions
The greatest whole number of square yards the teacher can buy is 4
The inequality is given as:

When the <em>number of square yards </em>of the white fabrics is 10.
It means that: x = 10
So, we have:


Collect like terms


Divide both sides by 10

The above inequality means that:
The greatest whole number of square yards the teacher can buy is 4
Read more about inequalities at:
brainly.com/question/15137133
Answer: 3.14 x 12^2 = 452.16
Try writing out the inequality.
$21<-⅔(4x+4)$ and see where u can go from there