Final answer:
To determine the present value of Katherine's lease option with a 7.5% semi-annual interest rate, we would need to calculate the present value of the monthly payments as an annuity due, as well as the present value of the final payment of $1,750. Exact calculations require the correct formulae and equivalent monthly interest rate, not provided in the reference information.
Step-by-step explanation:
To calculate the present value of the lease option for the printer, we must discount future cash flows back to their value today. Given an interest rate of 7.5% compounded semi-annually, we can compute the present value of the monthly payments plus the final payment.
Since the payments are made at the beginning of each month, we are dealing with an annuity due. Nevertheless, to simplify the calculation, we will treat it as an ordinary annuity and then adjust it for the one period's worth of interest because an ordinary annuity assumes payments are made at the end of each period.
First, we need to find the equivalent monthly interest rate since the compounding is semi-annual but payments are monthly. Then, we can find present values for both the annuity component and the single future value payment of $1,750.
However, the provided reference information does not contain the exact calculations or formulae needed for this specific scenario. Thus, the calculation of exact present value for Katherine's scenario cannot be provided accurately using the provided information.