Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by 
where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.
A. $292
B. $546
C. $715
D. $461
Answer: B
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Solve the problem.Suppose the current cost of gasoline is $3.07 per gallon. Find the current price index using the 1975 price as the reference value. In 1975, the cost of gasoline was 56.7 cents per gallon.
A. 250.3 B. 5.4 C. 541.4 D. 18.5
Find the length of the curve. Select the correct answer.
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The function 
is one-to-one on the domain 
Find 
a. 
b. 
c. 
d. 
e. 
Solve the problem.The following points form a quadratic relationship: (1, 5.0), (2, 4.4), (3, 4.3), (4, 4.2), (5, 4.6), (6, 4.8), 
(8, 6.2). The x-coordinates are the years a particular company has been in operation and the y-coordinates are the profit, in millions, for that year. Use quadratic regression to estimate the profit in the ninth year.
A. 6.48 million B. 7.19 million C. 7.38 million D. 4.47 million