Write the first five terms of the arithmetic sequence.an = an - 1 + 2; a1 = 18
A. 18, 2, 20, 22, 24
B. 2, 20, 38, 56, 74
C. 17, 19, 21, 23, 25
D. 18, 20, 22, 24, 26
Answer: D
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Solve the problem.Refer to the following preference schedule.
Find the winner by a Borda count.
A. D B. C C. B D. A
Provide an appropriate response.Look for a pattern in the sequence of figures shown below, and use your reasoning to draw the next figure.
A. 
B. 
C. 
D. 
New telephone lines must be installed to connect 8 cities (A, B, C, D, E, F, G, and H). 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. 24 million. B. 22 million. C. 21 million. D. 18 million. E. none of these
Estimate by rounding.
A. 800 B. 400 C. 500 D. 452