First, you solve the square root:

Knowing that the square root of a negative number doesn't exist:


is your answer.
Hope it helped,
Happy homework/ study/ exam!
It’s 4 according to my calculator
Step-by-step explanation:
the eqn is 3x-2y+10=0
slope m=-3/-2=3/2 (m=(-xcoeff/ycoeff)
eqn is
y-y1=m(x-x1)
y+5=3/2(x-2)
2y+10=3x-6
3x-2y-16=0
Answer 1 & 3. If none of the students read over 7 books, there is no way for them to read 27 in total.