The scores on a 30-point multiple-choice exam are given in the following frequency table:
The interquartile range on the exam is
A. 4.
B. 2.5.
C. 3.5.
D. 3.
E. none of these
Answer: A
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Translate the argument into symbolic form. Then use a truth table to determine whether the argument is valid or invalid. (Ignore differences in past, present, and future tense.)If this is Germany or Austria, then the signs are in German.
? This is Germany or Austria.
What will be an ideal response?
Give the center and radius of the circle. Then sketch its graph.(x - 1)2 + (y + 5)2 = 25
A. center (1, - 5), r = 5
B. center (1, 5), r = 5
C. center (- 1, 5), r = 5
D. center (- 1, - 5), r = 5
The graph of a rational function, f, is shown in the figure. Use the graph to answer the question. 
What is the domain of f?
A. domain of f: (-?, -4) ? (-4, 4) ? (4, ?) B. domain of f: (-?, 4) ? (4, ?) C. domain of f: (-?, -4) ? (-4, ?) D. domain of f: (-?, -6) ? (-6, ?)
Identify the coefficient of each term.z
A. -1 B. 1 C. z D. 0