Answer:
He is 20 at oldest, or 
Step-by-step explanation:
The first step in finding a possible age is:
Subtract 10 from 51, and you get 41. Divide by 2, and you get about 20.5.
This means Joe is younger than or 20 years old.
Answer:
all possible input values to the function
Step-by-step explanation:
The domain is the input to the function and the range is the output of the function
The answer will be 24 23/100