Emily invested his savings of $1,625 in a savings account that was earning simple interest at 4.26% p.a. He also invested $3,325 in his friend's business at 0.42% p.m. a. What is the interest rate per month that is equivalent to 4.26% p.a.? 0.00 % Round to two decimal places b. What was the total interest earned from both investments at the end of 15 months? $0.00 Round to the nearest cent