Find the domain and the range of the functions or relations from the graph.
A. domain: [-2, 2]; range: (-?, ?)
B. domain: (-?, ?); range: (-?, ?)
C. domain: (-?, ?); range: (-?, -2] ? [2, ?)
D. domain: (-?, -2] ? [2, ?); range: (-?, ?)
Answer: D
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Find an approximate value for the integral, using the trapezoidal rule with n intervals. Round the answer to the nearest tenth if necessary.
, n = 4
A. 70 B. 1242 C. 1260 D. 1386
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Use the following graph which shows the monthly sales of a heating supplier. 
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