Solve the problem.One maid can clean the house in 4 hours. Another maid can do the job in 8 hours. How long will it take them to do the job working together?
A. 2
hours
B. 
hours
C. 8 hours
D. 
hours
Answer: A
Mathematics
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Determine whether the matrices in each pair are inverses of each other.
, 
A. Yes B. No
Mathematics
A manufacturing company wants to maximize profits on products A, B, and C. The profit margin is $3 for A, $6 for B, and $15 for C. The production requirements and departmental capacities are as follows: 
What is the maximum profit if the capacity of the finishing department changes to 33,000 hours?
A. $225,000 B. $60,000 C. $64,000 D. $114,000
Mathematics
Find the domain of the function.
A. {x|x ? 8} B. {x|x ? 8} C. all real numbers D. {x|x > 8}
Mathematics
Perform the operation indicated. Simplify.
- 
A. 6
B. 6x
C. 
D. 
Mathematics