The domain is group/set of numbers that will work for the equation
if no domain is specifiedl, then the domain is usually the set of all real numbers
to find the domain, find which numbers will violate any rules, such as dividing by zero
if there are any, then just say that the domain is all real numbers except these numbers exg
if you had an equaiton y=2/x then x cannot be zero because 2/0 is undifined and impossible so the domain would be all real numbesr except 0
domain is all real numbers
Answer:

Step-by-step explanation:
the general equation of a circle is

with (h,k) being the centre of the circle and r the radius
Answer: *See attachment*
I'll have to ask you to excuse my handwriting- I had to write pretty fast.
Anyway, I hope this helps!
LaciaMelodii :)
Answer:
Freddie would have walked 25 miles after 12 and a half hours.
Step-by-step explanation:
Given that Freddie is walking at a constant speed, and after 2 hours he walked 4 miles, while after 4 hours he walked 8 miles, to determine how long he walked 25 miles, the following calculation must be performed:
4/2 = Miles per hour
2 miles per hour
2X = Y
2X = 25
X = 25/2
X = 12.5
Therefore, Freddie would have walked 25 miles after 12 and a half hours.