To calculate the amount of interest that Austin will earn on his investment in Account A after 2 years, we need to first calculate the total amount of interest that the account will earn over this time period. Since the interest rate is 3.5% and is paid as simple interest, this means that the amount of interest earned each year will be 3.5% of the initial investment.
Since Austin invested $2400 in his savings account, the amount of interest earned each year will be 3.5% * $2400 = $84. Therefore, the total amount of interest that Austin will earn on his investment in Account A after 2 years will be $84 * 2 = $<<84*2=168>>168