c is the answer i hope this help
The answer is 9/10 because I did the test and that was the answer
Replace the x in 7x by (3x + 1):-
(f o g)(x) = 7 * (3x + 1)
= 21x + 7 which is choice D.
Can you please include a question please? Thank you
C and D because in that image that is what an proportional relationship looks like so anything that looks like the graph in the photo or c and d is proportional