Q 12

Write the given series in summation notation.
A)
B)
C)
D)
E)

Q 14

Suppose the ratio of alligators to pythons in a marshland from 2001 to 2008 can be approximated by the model where is the year, with corresponding to In 2006, the total number of alligators and pythons in the marsh was about 700.In that year, how many were alligators?
A) 62
B) 639
C) 57
D) 61
E) 638

Q 15

Suppose that the annual payroll (in billions of dollars) of new car dealerships in the United States from 2000 to 2005 can be approximated by the model where represents the year, with corresponding to 2000.Find the total payroll from 2000 to 2005 by evaluating the sum Round your answer to the nearest ten million dollars.
A) $343.70 billion
B) $292.10 billion
C) $246.50 billion
D) $298.10 billion
E) $387.60 billion