I don't understand this. Can help me

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?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2