The data in the figure below represents the annual salaries of 120 professional mathematicians.
An approximate value for the interquartile range of the salary data is
A. $10,000.
B. $28,500.
C. $21,500.
D. $32,500.
E. $70,000.
Answer: B
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Solve the problem with estimation, but do not use a calculator. Use rounding to make the resulting calculations simple.Four people share the use of a cable modem service that costs $49.95 a month.
Fill in the blank(s) with the appropriate word(s).
If the given point is on the graph of f(x), what would be the corresponding point for the given translation?(3, -5), f(x + 11) - 12
A. (14, -17) B. (14, 7) C. (-8, -17) D. (8, -7)
Solve.Ms. Losch has to ship 
sofas by truck. If each truck can hold 
sofas, how many trucks are needed to ship the sofas?
A. 6 trucks B. 31 trucks C. 26 trucks D. 25 trucks
Solve the problem.Tides go up and down in a 12.4-hour period. The average depth of a certain river is 10 m and ranges from 5 to 15 m. The variation can be approximated by a sine curve. Write an equation that gives the approximate variation y, if x is the number of hours after midnight and high tide occurs at 5:00 am.
A. y = 5 sin 
+ 10
B. y = 10 sin 
+ 5
C. y = 10 sin 
+ 5
D. y = 5 sin 
+ 10