Find the indicated root:
a. 8
b. 2
c. 6
b. 2
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Find the requested partial derivative.
at 
= 
if 
and 
A. 
B. 
C. 
D. 
Write the ratio in fraction notation.A company with 1080 total employees prepares the following analysis for the length of time its employees have been with the company. Use the table to answer the question. 
What is the ratio of the number of employees working 6 years or less but more than 4 years to the number of employees working more than 6 years?
A. 
B. 
C. 
D. 
Solve the problem.BJ can overhaul a boat's diesel inboard engine in 30 hours. His apprentice takes 60 hours to do the same job. How long would it take them working together assuming no gain or loss in efficiency?
A. 12 hr B. 8 hr C. 90 hr D. 20 hr
Perform the indicated operation.(4x5 - 9x4 - 6x3 - 5) + (4x5 + 7x4 - 7x3 + 4)
A. -7x24 - 1 B. 8x10 - 2x8 - 13x6 - 1 C. 2x5 + 2x4 + 8x3 - 5 D. 8x5 - 2x4 - 13x3 - 1