can you please please help me answer this

Find the value of the unknown quantity Zin the following diagram, such that the equivalent cash outflow equals the equivalent cash inflows when I = 15% compounded discretely. Use the present equivalent worth at 0 years. A=$1,000/YEAR 0 1 1 3 1 2 4 1 5 6 7 8 9 YEARS Z Will the value of Z increase or decrease if the interest rate increases