43
48 - 27(since they left) + 22(since they joined) = 43
Answer:
A. 
B. 
and
D. 
Step-by-step explanation:
A rational function is of the form
where
and
are polynomial functions.
Based on this definition, every polynomial function is a rational function.
Hence the rational functions in the options provided are;
A. 
B. 
and
D. 
is not a rational function because the numerator is not a polynomial function.
Answer: you need more information to solve
Step-by-step explanation:
Answer:
A, D
Step-by-step explanation: those are the right naswers