It is a, the zero property. It is so since you are multiplying zero to get an answer of zero.
I will try to elaborate.
The "Zero Product Property" says that:
If a × b = 0 then a = 0 or b = 0
(or both a=0 and b=0)
18 x 0 = 0
Let's say that 18 = a and 0 = b. By the converse of the statement, it states that if a or b is zero, then it must be the zero property. Since b is in fact, zero, then we can conclude that it is, in fact, the zero property.
Answer:


Step-by-step explanation:

Answer:
b = -3
Step-by-step explanation:
7b-27=8(6+4b)
Distribute
7b -27 = 48 + 32b
Subtract 7b from each side
7b-7b-27=48+32b-7b
-27 = 48+25b
Subtract 48 from each side
-27-48 = 48+25b -47
-75 = 25b
Divide each side by 25
-75/-25 =25b/25
-3 =b
You would multiply 32,000 x 0.05 = 1,600 so
1,600 x 4 = 6,400
So the population would grow by 6,400 every 4 years.
They answer is 4.75. 1/4 =.25 so 5-.25=4.75