What is the effective annual rate on a loan with an APR of 12.5% if interest is compounded continuously?

2.A bond has 10 years to maturity, a coupon rate of 5% (coupons paid semi-annually), a yield to maturity of 6%, and a face value of 1000. Calculate the bond's (Macaulay) duration. Enter your answer as an annual number using two decimal places. Ex. 12.34 years should be entered as 12.34.

3.Calculate the present value of a $666 cash flow that is expected to be received in 6 years from now. Assume a 10% APR interest rate that is compounded quarterly. Enter your final answer using two decimal places (Ex. $12.34 should be entered as 12.34)

4.What is the value today for a security that will pay you $22 in two years and $67 in four years from now. Assume the interest rate is 10%. Round your final answer to two decimal places. Ex. $12.34 should be entered as 12.34