In questions 9-14 determine whether coefficients. 9. an = 0.7am-1-0.3an-2 A. B. YES NO 10. annan-1 A. YES B. NO 11. an = 5a22-1-3a2-2 a 5a2 = A. YES B. NO 12. An = an-3 A. YES B. NO 13. an-7an-2+ an-5 = 0 an A. YES B. NO 14.an+an-1 = 1 Q A. YES B. NO