Answer: Due to its anonymous nature, if you lose your cash, it's gone. Payment cards can be cancelled and replaced swiftly and remotely. Whilst cash may offer you complete anonymity from data thieves, EMV chip enabled cards offer a more thorough form of payment authentication, providing an extra layer of payment security
So, therefore, C.
You first do 3 + 2, which would equal 5. Then, you would just do 3/5.
1/8 x 5 = 5/8
5/8 of the passengers were adults :)
The answer is, y = -1/3 - 3