Brittany invested her savings of $1,475 in a savings account that was earning simple interest at 2.59% p.a. She also invested $2,425 in her friend's business at 0.16% p.m. a. What is the interest rate per month that is equivalent to 2.59% p.a.? % Round to two decimal places b. What was the total interest earned from both investments at the end of 9 months? Round to the nearest cent