Add or subtract. Express the answer as a mixed number.
A. 14
B. 15
C. 13
D. 2
Answer: A
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Answer the question.The Humane Society is interested in the average length of the tail of tabby cats. What is the population?
A. All cats with a tail B. All cats C. All tabby cats D. All of these
Solve. Round to two decimal places unless otherwise noted.Suppose the cost per ton, y, to build an oil platform of x thousand tons is approximated by 
What is the cost per ton for x = 200?
A. $378.79 B. $75,757.58 C. $937.50 D. $100,000.00
Use a proportion to solve the application.To determine the number of fish in a lake, researchers caught and tagged 260 of them. In a later sample of 72 fish, the researchers found that 30 were tagged. Estimate the total number of fish in the lake.
A. 8 fish B. 561,600 fish C. 108 fish D. 624 fish
Find f (x) by solving the initial value problem.
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; 
?
A. 
B. 
C. 
D. 
E. 