The (r + 1)st term of the expression (a + b)n, 0 ? r ? n, is given by 
an - rbr. Find the specified term.The 5th term of (3x + 3)5.
A. 405x
B. 1215
C. 1215x2
D. 1215x
Answer: D
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Solve the problem.About how much will 
change if the point 
moves from 
a distance of 
unit in the direction of 
A. - 
B. - 
C. - 
D. - 
A traveling salesman's territory consists of the 5 cities shown on the following mileage chart. The salesman must organize a round trip that starts and ends at Louisville (his hometown) and will pass through each of the other four cities exactly once.Mileage Chart
The cheapest-link tour starting from Louisville is given by:
A. Louisville, Columbus, Chicago, Buffalo, Boston, Louisville. B. Louisville, Columbus, Buffalo, Boston, Chicago, Louisville. C. Louisville, Boston, Buffalo, Chicago, Columbus, Louisville. D. Louisville, Chicago, Buffalo, Boston, Columbus, Louisville. E. none of these
Determine the phase shift of the function.y = 
sin (?x + 5)
A. 5
B. - 
C. - 
D. 
Find an equivalent equation in polar coordinates.x2 + y2= 169
A. r = 169 B. r = 13 sin ? C. r = 13 D. r = 13 cos ?