Answer:
A = 4N + 5
A + N = 120
Step-by-step explanation:
Given that
A = Number of AFC cars
N = Number of NFC cards
And, Total cards is 120
Now
the equation would be
A + N = 120
Also
The number of AFC is 5 more than 4 times the number of NFC cards
So,
A = 4N + 5
Therefore
A = 4N + 5
A + N = 120
Hence, the system of equations that should be used is A = 4N + 5 and A + N = 120 respectively