Plzz answer me fast and full explanation​

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

What term makes it inconsistent y=2x - 4