In its simplest form the domain is all the values that go into a function, and a range is all the values that come out.
Answer:
The most obvious one i can think of would be
x = 13
Step-by-step explanation:
x + 8 = 21
x + 8-8 = 21-8
x = 13
Answer:
b equals 20
Step-by-step explanation:
b - 13 = 7
7 + 13 = b
7 + 13 = 20
........................................ 7
I don't know what you are talking about please re word the question its really hard to understand what your asking.