Solve the problem.A certain radioactive isotope has a half-life of approximately 850 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 20% of that amount?
A. 274 years
B. 1974 years
C. 1954 years
D. 680 years
Answer: B
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Find the limit, if it exists.
A. ±
B. 3.5
C. 
D. Does not exist
The life expectancy of a star is a power function of its mass. The value of the power in this function is 
. If the life expectancy is doubled, how is the mass affected? Round your answer to two decimal places if necessary.
?
A. Life expectancy is multiplied by 6.25. B. Life expectancy is multiplied by 0.83 C. Life expectancy is multiplied by 0.76. D. Life expectancy is multiplied by 6.3.
Provide an appropriate response.Write two inequalities for the following pair of numbers: 73 and 75
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Consider the functions f(x) = 3x2 - 17x + 20 and g(x) = 3x2 - 5x. Find 
(x).
A. 
, x ? 0
B. 
, x ? - 
, 0
C. 
, x ? - 
, 0
D. 
, x ? 
, 0