How do you solve these? thanks in advance :)

2.)With an interest rate of 4 percent, what is the present value of $181 to be received next year? Round your answer to at least 2 decimal places.

3.)With an interest rate of 3 percent, what is the present value of $159 to be received in two years? Round your answer to at least 2 decimal places.

4.)If an instrument pays $131 in one year and $194 in three years, what is the present value of the instrument if the interest rate is 7%?

14.)If a $1,000 face value coupon bond has a coupon rate of 3.86 percent, what is the coupon payment (in $) every year?

15.)If the amount payable in two years is $2,372 for a simple loan at 4 percent interest, what is the loan amount (in $)? Round your answer to at least 2 decimal places.