Find the indicated probability.The managers of a corporation were surveyed to determine the background that leads to a successful manager. Each manager was rated as being either a good, fair, or poor manager by his/her boss. The manager's educational background was also noted. The data appear below: Educational Background
If a manager is selected at random, what is the probability that he or she is either a good manager or has an advanced degree? Give your answer as a fraction.
A. 
B. 
C. 
D. 
Answer: C
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Write the expression in the standard form a + bi.
A. -i B. -1 C. 1 D. i
Solve the problem.The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same heat loss as the given temperature and wind speed. One formula for computing the equivalent temperature is W(t) = 
where v represents the wind speed (in meters per second) and t represents the air temperature 
. Compute the wind chill for an air temperature of 15°C and a wind speed of 12 meters per second. (Round the answer to one decimal place.)
Fill in the blank(s) with the appropriate word(s).
Find the derivative.s = t2 - cos t + 5et
A. 
= 2t + sin t + 5et
B. 
= t + sin t + 5et
C. 
= 2t + sin t - 5et
D. 
= 2t - sin t + 5et
Solve the problem.The following table shows the amount of income tax paid in 2005 by four people selected at random from a certain town. 
Find the average amount of income tax paid in 2005 by the two women.
A. $4,500 B. $3,888.75 C. $3,277.50 D. $9,000