Simplify the complex fraction.3 + 
A. 
B. 
C. 
D. - 
Answer: A
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Solve the problem.When exposed to ethylene gas, green bananas will ripen at an accelerated rate. The number of days for ripening becomes shorter for longer exposure times. Assume that the table below gives average ripening times of bananas for several different ethylene exposure times. 
Plot the data and then find a line approximating the data. With the aid of this line, determine the rate of change of ripening time with respect to exposure time. Round your answer to two significant digits. 
A. 
-0.15 day per minute
B. 
-6.7 days per minute
C. 
38 minutes
D. 
5.6 days
The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question. 
How much more revenue did the company take in for the fourth quarter of 2010 than the second quarter of 2009?
A. $7 million B. $35 million C. $6 million D. $30 million
Solve using the elimination method. x + y = -1x - y = -13
A. (7, 7) B. (-8, 7) C. (-1, -13) D. (-7, 6)
Write the expression using exponents.x ? x ? x ? x ? x ? x ? x
A. 7x B. 7 C. x7 D. 7x