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 profit is made).
A. t = 34 units
B. t > 19 units or t < 15 units
C. t = 19 units or t = 15 units
D. 19 units < t < 15 units
Answer: B
Mathematics
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Determine the number of spanning trees in the graph.
A. 6 B. 7 C. 9 D. 10
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Solve the problem.Anne and Nancy use a metal alloy that is 17.3% copper to make jewelry. How many ounces of a 13% alloy must be mixed with a 20% alloy to form 70 ounces of the desired alloy?
A. 48 ounces B. 29 ounces C. 43 ounces D. 27 ounces
Mathematics
Simplify.-8(18)
A. -64 B. -144 C. 16 D. 80
Mathematics
Find the sum or difference, and write in lowest terms, if necessary.
+ 
A. 
B. 
C. 
D. 
Mathematics