Simplify.Rationalize the denominator. 
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.The polynomial 
gives the approximate total earnings of a company, in millions of dollars, where 
corresponds to 2008, 
corresponds to 2009, and so on. This model is valid for the years from 2008 to 2012. Determine the earnings for 2012. Round your answer to the nearest hundredth million.
A. $2.05 million B. $1.84 million C. $2.23 million D. $2.32 million
Use an integer or rational number to express the number representing change.In one state, the lowest point is 4019 feet below sea level.
A. 4019 B. -4019
Compute the compound interest.How long will it take for $8200 to grow to $15,600 at an interest rate of 5.1% if the interest is compounded continuously? Round the number of years to the nearest hundredth.
A. 1261.05 yr B. 1.26 yr C. 5.1 yr D. 12.61 yr
Use a calculator to find a rational approximation of the square root. Express your answer to the nearest hundredth.
?
?
A. 3.84 B. 7.88 C. 7.68 D. 7.58 E. 15.36