The degree of the expression is 2.
To find the width, divide the area by the length:
27 / 6 = 4.5
The width is 4.5 inches.
The two square roots are 20 and -20
5 teachers and 10 tutors because we can make a proportion:
3/75=x/120, and when you cross multiply and solve for x you will get 4.8, but there can't be 4.8 teachers so we can say 5 teachers (round). Do the same for tutors: 6/72=x/120, x would equal 10.
Hope this helps!