Find the domain of the function.g(x) = 
A. {x|x ? -9, 9}
B. {x|x ? 0}
C. all real numbers
D. {x|x > 81}
Answer: A
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The life expectancy of a star is a power function of its mass. The value of the power in this function is 
. If the mass is increased by 43%, how is the life expectancy affected? Round your answer to two decimal places if necessary.
?
A. Life expectancy is increased by 40.89% B. Life expectancy is decreased by 40.89% C. Life expectancy is decreased by 59.11%. D. Life expectancy is increased by 59.11%.
Solve the problem.Suppose you purchase a 10-year U.S. savings bond with an APR of 2.5%. The face value of the bond is $9000. Find the purchase price of the bond.
A. $7272.73 B. $7200 C. $7128.71 D. $7346.94 E. $7058.82
Find the numerical value of the rational expression for the given value of x.
, x = -4
A. - 
B. - 
C. 
D. - 
Solve the problem.Suppose the cost per ton, y, to build an oil platform of x thousand tons is approximated by y = 
. What is the cost per ton for x = 400?
A. $200,000.00 B. $131.25 C. $113,513.51 D. $283.78