A hummingbird's brain has a weight of approximately 2.94 x 10- ounces. An elephant's brain has a weight of approximately 1.76 x 102 ounces. Approximately how many times heavier is the elephant's brain than the hummingbird's brain? A 60 6 600 C 6,000 0 60,000​

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?