A business anticipates the following cash flows: -$1000 today +$250 in 3 months +$800 in 15 months

a. With an annual effective interest rate of 5%:

i. What is the current value at time 0?

ii. What is the current value in 6 months?

iii. What is the current value in 2 years?

b. With an annual effective discount rate of 7%:

i. What is the current value at time 0?

ii. What is the current value in 9 months?

iii. What is the current value in 18 months?