Question

a certain bank assigns a unique number to each savings account. the amount of savings in each account depends on how much the owner deposits into the account. The interest pain on each account depends on how much money is in the account.
Which of these relations is not a function?
A.(interest paid, savings account number)
B.(interest paid, amount in saving account)
C.(savings account number, interest paid)
D.(savings account number, amount in savings account)

Answer 1

i would say one that is not a function is
A.(interest paid, savings account number)
since the same amount of interest could be paid to two different accounts

Answer 2

I agree, same with B - well, it depends on if each account has the same interest rate or not. If different accounts have different interest rates, then different accounts could get the same amount of interest and have different amounts in the account

Answer 3

The last two are certainly functions