Without graphing the function, determine its amplitude or period as requested.y = cos 5xFind the period.
A. 2?
B. 1
C. 5
D. 
Answer: D
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New telephone lines must be installed to connect 9 cities (A, B, C, D, E, F, G, H and J). Due to government regulations, the only possible connections that are allowed are shown by the edges on the network below. The numbers on the edges indicate the cost (in millions of dollars) of each possible connection. The telephone company wishes to connect the cities in the cheapest possible way.
The total cost of the optimal solution to this problem is
A. 21 million. B. 19 million. C. 20 million. D. 18 million. E. none of these
Solve the problem.Use the graph to determine how many hours were needed to prepare for 
.
A. 3 B. 5 C. 1 D. 2
Find the product.
A. 
B. - 
C. 
D. - 
Perform the given set operation.
?
Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9}.
?
?
A. {1, 3, 5 ,7} B. {2, 4, 6} C. {1, 2, 3, 4, 5, 6, 7, 8} D. {2, 4, 6, 8, 10} E. {1, 3, 5, 7, 9}