Answer:
x + 7
Step-by-step explanation:
x2 + 4x − 21
set equal to 0
x2 + 4x − 21 = 0
factor
(x - 3) (x + 7)
x2 + 11x + 28
set equal to 0
x2 + 11x + 28 = 0
factor
(x + 4) (x + 7)
You have to find out what can go into both five can go into both so 10÷5 is two and 25÷5 is five so the answer is 2/5
She can attach 6 balloons to each table making the answer letter A because she must attach less than 6
The answer is: positive 61.