A life insurance policy is issued at age 30. The initial death benefit is 10,000. At age 40 and each year thereafter, the death benefit increases by 5000 per year for ten years. No death benefit is payable after age 50. Annual premiums X are payable at the beginning of each year for 10 years. Find X given M^o = 1200, M50 = 800, R40 = 33,000, R50 = 20,000 N30 = 90,000, and 7^40 = 68,000.