The hard drive also known as hard disk drive is a memory hard ware on a desktop or laptop that uses magnetic storage system to store and retrieve files on a computer, it stores file for personal use and also for the operating system of the computer .
If SAM wants to open a file that he saved the hard drive will be where the file will be retrieved from because that is storage component of the computer not the CPU which is just a processing unit while the mother board is the component of the computer that houses very important components like the CPU,memory and input and output devices connectors.
the fax machine is not a component of a computer it is machine on its own.
So he what you do is take $488 multiply it by 22% to get $107.36 you then subtract $488 from $107.36 to get what he was paying before premium increase which is $380.64
