FrEe PoInTs!1!1!1!1!1

What is the area of triangle abc if a = 8, b = 11, and c = 15?

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?

Asap easy 6th grade 30 pts describe how to rewrite a power with a positive exponent so that the exponent is in the denominator.