PLEASE HELP AND SHOW WORK PLS

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?

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?