For numbers 16 to 20: A virologist discovers that a certain virus replicates inside the human body by doubling every hour. If there are 6 viruses in the rst hour, 12 viruses in the second hour, 24 viruses in the 3'd hour, and the pattern continues in the hours that follow, how many hours will it take to have 3072 viruses? 1 pm in 16. What is the value of a1 in the problem? A. 1 B. 2 0.6 D. 3072 I pm m 17. What is r in the problem? A. 1 B. 2 C. 6 D- 3072 " 1 pm "1 18. The number of viruses increases by how much? A. 1% B. 2% C. 100% D. 200% I poi m 19. What is being required in the problem? A. n B. r C. an D. Sn 1 point 20. Jess. Mary. Joseph and John gave their answers to the problem: Jess: 9 hours Mary: 10 hours Joseph: 11 hours John: cannot be solved Who gave the correct answer? A. Jess C. Joseph 8. Mary D. John