Please answer the all of the two questions

9) What is the Capitalized Equivalent worth of an infinite annuity of $1,000 paid every other year, when the interest rate is 11% annually? 10) You purchase a machine for $10,000 and it costs $1,000 a year to maintain forever. Every 4 years, you need to rebuild the machine for $3,000. What is the Present Total Cost of this machine based on infinite service? (use 7%)