I cant figure out these study problems can someone help me? Thanks!

The breakeven (NPW=$0) dollar value (nearest $100) of the annual cost parameter (AOC) is a) 172,600; b) 176,900; c) 188,700; d) 198,900. 20. The breakeven (NPW=$0) dollar value (nearest $100) of the salvage value parameter (SV) is a) -14,500; b) -7,900; c) 7,900; d) 12,200.

I. Initial Cost (P) = $450,000 2. Salvage value (SV)= $45,265 3. Annual operating revenues (AOR) = $300,000 4. Annual operating costs (AOC)= $180,000 5. Economic life (N) = 5 years 6. MARR= 10% 7. Inflation Rate=0% One-way Sensitivity Table Net Present Worth (NPW Parameters -15% -10%| -5% | Reference l +5% +10% +15% Scenario AOR AOC SV MARR