Is there like any image to see how big are the posts?
Answer
16/144
If that doesn't work, try simplifying the fraction.
Answer:
y-4=(-1/2)(x-4)
Step-by-step explanation:
Slope=(8-4)/(-4-4)=-4/8=-1/2
The equation of the line is y-4=(-1/2)(x-4)
Answer:
So, 
Step-by-step explanation:

To evaluete this expression we apply exponential property

IF any expression has exponent 0 then the value is 1 always
for example, 

because exponent is 0
So, 