Determine which fractions are improper.
, 
, 
, 
, 
A. 
, 
, 
, 
, 
B. 
, 
C. 
, 
, 
, 
D. 
, 
, 
Answer: D
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Find the relative maximum and minimum values.
f (x, y) = 3x2 + 7y2 = 12xy
A saleswoman wants to visit eastern cities, New York City, Boston, Cleveland, and Washington, D.C. Driving distances are as shown in the figure below. What is the shortest trip starting in New York that visits each of these cities, if 
? Find a solution using the sorted-edge method.
?
?
__________ mi.
Fill in the blank(s) with the appropriate word(s).
Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q.
A. 4
; 
B. 4; 
C. 4
; 
D. 4; 
Solve the problem.In a student survey, 119 students indicated that they speak Spanish, 25 students indicated that they speak French, 9 students indicated that they speak both Spanish and French, and 122 students indicated that they speak neither. How many students participated in the survey?
A. 257 B. 266 C. 135 D. 248