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Question 10
Solve the problem.
The profit made when t units are sold, t> 0, is given by P-t2-30t+216. Determine the number of units to
be sold in order for P> 0 (a profit is made).
A) t= 18 or t = 12
B) t> 18 or t < 12
C) t=30
D) 18 < t < 12



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