Give the domain and range of the relation.
A. domain: (-?, ?); range: (-?, ?)
B. domain: (-?, -1]; range: (-?, 3]
C. domain: (-?, ?); range: (-?, 3]
D. domain: (-?, -1) or (-1, ?); range: (-?, 3) or (3, ?)
Answer: C
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Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)2.6x - 0.7y + 5.3z - 3.4w = 2.96.5y + 0.7w = -1.84.0z - 2.2w = 1.54.9x + 0.6w = 3.2
A. {(-0.5, -0.4, 1.1, 9.4)} B. {(0.5, -0.4, 1.1, 1.3)} C. {(0.5, 0.4, 1.1, -6.3)} D. {(0.5, -0.4, -0.3, -1.3)}
Find the angle between u and v in radians.u = 3i - 2j - 6k, v = 3i + 2j - 3k
A. 1.24 B. 0.78 C. 1.55 D. 0.79
Use series to evaluate the limit correct to three decimal places.
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Solve.A storehouse stores 270 different inventory items. 
of these items are perishable. How many of the inventory items are perishable?
A. 212 items B. 220 items C. 54 items D. 216 items