Please answer the following and show steps in detail:

1. Determine and compare the difference in annual worth between an investment of $100,000 per year for 50 years and an investment of $100,000 per year forever at an interest rate of (a) 5% and (b) 10% per year.
2. A manufacturer of electronic devices wants to invest $650,000 in equipment for making compact piezoelectric accelerometers for general-purpose vibration measurement. The revenue from this machine will be $225,000 per year for 10 years and $70,000 in salvage value from the used equipment sale in year 10. Determine if this investment is suitable or not for a MARR = 35%.