Solve the problem.The profit made when t units are sold, t > 0, is given by 
Determine the number of units to be sold in order for P < 0 (a loss is taken).
A. t > 0
B. 13 < t < 20
C. t = 13 or t = 20
D. t < 13 or t > 20
Answer: B
Mathematics
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Graph the solution set of the system of inequalities.
+ 
? 1
+ 
? 1
A. 
B. 
C. 
D. 
Mathematics
Answer the question on the order of rational numbers.Make a true statement by inserting <, >, or =;
A. > B. = C. <
Mathematics
Solve the problem.A musician plans to perform 5 selections for a concert. If he can choose from 7 different selections, how many ways can he arrange his program?
A. 35 B. 21 C. 16,807 D. 2520
Mathematics
Find the nonreal complex solutions of the equation. Write your answer in standard form.(6z + 1)2 = -98
A. 
B. {-1 ± 7i
}
C. 
D. {-1 ± i
}
Mathematics