Solve the problem.The table shows the population of a city for five years.
This data was used to develop the quadratic equation 
, which models the population of the city y in millions in the year x, where x = 0 represents 2007, x = 1 represents 2008, and so on. Use the model to find the estimated population in the year 2009.
A. 66,822,000
B. 1,490,000,000,000
C. 65,538,000
D. 1,490,000
Answer: A
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Solve the equation. Express radicals in simplest form.x2 + 4 = 68
A. ±7 B. 8 C. 34 D. ±8
Find the present value of the loan on the day it was made. Round to the nearest cent.Principal: $1933.03Rate (ordinary): 9.2%Length of loan: 280 daysValue of money: 13.4%
A. $1927.97 B. $1871.64 C. $1875.12 D. $1875.84
A study on worldwide oil use was prepared for a major oil company. The study predicted that the amount of oil used to fuel productivity in a certain country is given by
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where f (t) denotes the number of barrels per $1,000 of economic output and t is measured in decades (
corresponds to 1965). Compute f '(0) and f ?'(2).
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Round the answer to the nearest hundredth.
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A. 
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B. ?
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C. ?
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D. ?
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E. ?
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The graph of an ellipse is given. Find the standard form of the equation of the ellipse. 
A. x2 + 
= 1
B. 
+ y2 = 1
C. 
+ y2 = 1
D. 
- y2 = 1