Question

4. The table shows the predicted growth of a particular bacteria after various numbers of hours. Write an explicit formula for the sequence of the number of bacteria.

Hours (n)

1

2

3

4

5

Number of Bacteria

21

42

63

84

105
Find the missing term of the arithmetic sequence 22, ___ , 34, ...
46
16
28
40

9. What is the sum of the finite arithmetic series?

(–5) + 0 + 5 + 10 + ... + 65 (1 point)
900
455
450
445

Answer 1

for the second question...subtract 22 from 34 and then divide by two to get the common difference. once you get that add it back to the 22.