I have no idea how to do this :)

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 is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?