Vibrations Dynamics uses vibrations sensitive equipment based on lithography to measure vibrations in building foundations caused by subway, rail, and automobile traffic in major cities of the world. Use a spreadsheet to

(a) Plot the annual tax curves, and

(b) Calculate total taxes and the PW_tax values at i = 8% per year over an 8-year study period for two depreciation methods: SL with n = 6 years and DDB with n = 8 years. Comment on your total tax and PW_tax results. Neglect any tax effects connected with the salvage value. The estimates are:

P = $200,000, B = $280,000, S = 20% of P, CFBT

   = $100,000 per year, T_e = 30%.