B it’s b I think I did same one
Answer:
7
Step-by-step explanation: calculate the prime factors of 7 and 21, than find the greatest common factor
Answer:
(fºg)(x) = x -2
Step-by-step explanation:
f(x) = x + 2
g(x) = x - 4
(fºg)(x) = ( x - 4) + 2
(fºg)(x) = x -2
Answer:

Step-by-step explanation:
Since g(x)=0, you input 0 into every x

Which then becomes:

Take out the 0 and there's your answer