Simplify the expression by using the order of operations.2 ? 9 - 2
A. 20
B. 36
C. 14
D. 16
Answer: D
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Provide an appropriate response.Determine whether the sequence is arithmetic, geometric, or neither. If the sequence is geometric, find the common ratio r. If the sequence is arithmetic, find the common difference d.4, 12, 36, 108, 324
A. geometric, r = 12
B. geometric, r = 3
C. arithmetic, r = 
D. arithmetic, d = 12
Plot the point.(-4, -2)
A. 
B. 
C. 
D. 
A delivery truck must deliver packages to 6 different store locations (A, B, C, D, E, and F). The trip must start and end at A. The graph below shows the distances (in miles) between locations. We want to minimize the total distance traveled.
How many different Hamilton circuits would we have to check if we use the brute-force algorithm? (Do not count the same circuit traveled backward.)
A. 6 B. 60 C. 15 D. 30 E. none of these
Solve.The air pollution, y, in appropriate units, in a large industrial city has been growing as shown by the graph below, where x is time in years from 1990. That is, x = 0 represents 1990. Approximate the air pollution in the year 2005 (x = 15) to the nearest thousand.
A. 20,000 B. 18,000 C. 15,000 D. 22,000