Can someone please help me I don’t know how to do this (Due today)

Let w = 4. enter > , < , or = to compare the expressions. 3w² + 1 10w + 8

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?

Is the square root of 4 plus the square root of 16 rational?