All of them can be accomplished with electronic banking, but C and D would be easiest to do online.
Answer is 0. Use PEMDAS. Trust the process
It's C, Y = 2x + 3. This is cause, if we use the table and say that y = 5 and x = 1, then 5 = 1 x 2 + 3 which is correct
Its B bro becauseiys a negative so you would get rid of the symbol then flip the negative