A. Show Your Work for the Calculation of Each Doubling Time

; 68, 74 and 85a

68.) Rule of 70 a.] Show your work for the calculation of each doubling time. r=4 d = r = 6 d = r = 9 d = r = 10 d = r = 12 d =

b.] Test the Rule of 72 r=4 d = r = 6 d = r = 9 d = r = 10 d = r = 12 d =

c] Test the Rule of 69 r=4 d = r = 6 d = r = 9 d = r = 10 d = r = 12 d =

d.] Calculate using B = Pert r=4 d = r = 6 d = r = 9 d = r = 10 d = r = 12 d = e.] Based on the results above, write a paragraph explaining which of the three rules you would prefer to use. Support your reasoning.

74. Using Forensic Science to Solve a Murder a.] Give the graph for t > 0 (be sure to correctly label your axis and use appropriate scales)

Paste graph here: What is the horizontal asymptote of the graph (give the equation)?

What does the horizontal asymptote represent (in terms of this problem)?

What is the temperature after 10 hours? How long does it take the temperature to reach 25°C? c.]

What time will he need the alibi? (show your calculations)

85.) Population Growth

a.] Use the formula given to complete the chart:

Year Calculated Population Paste your graph here: