Use the data set {d1, d2, d3, ..., d256} consisting of 256 numbers to answer the following question(s).After sorting the data set (in increasing order from left to right), the first quartile is
A. the average of the numbers in the 63rd and 64th positions.
B. the number in the 65th position.
C. the average of the numbers in the 64th and 65th positions.
D. the number in the 64th position.
E. none of these
Answer: C
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Solve the problem.A formula used by an engineer to determine the safe radius of a curve, R, when designing a particular road is: 
where ? is the superelevation of the road and V is the velocity (in feet per second) for which the curve is designed. If 
f = 0.1
, and 
find V. Round to the nearest foot per second.
A. V = 74 ft per sec B. V = 71 ft per sec C. V = 69 ft per sec D. V = 67 ft per sec
Change the given quantity to the indicated unit.6 wk = day
A. 42 B. 84 C. 360 D. 144
Find the value of the determinant.
A. -54 B. 378 C. 54 D. 59
Use the product rule to simplify the radical.
A. 5
B. 3
C. 3
D. 