Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly with the area A of the enlargement. If 140 seconds are required to make a 5-by-4 enlargement, find the time required for a 
enlargement.
A. 336 sec
B. 252 sec
C. 378 sec
D. 294 sec
Answer: D
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Solve by the elimination method.3x - 6y = -4-9x + 18y = -12
A. {(12, -24)} B. No solution C. Infinitely many solutions D. {(-12, 24)}
Find the first five partial sums of the given series and determine whether the series is convergent or divergent. If it is convergent, then find its sum.
+ 
+ 
+ 
+ 
+ ...
A. 0.5, 1.16667, 1.91667, 2.71667, 3.55; convergent; 3.55 B. 0.5, 1.16667, 1.91667, 2.71667, 3.55; divergent C. 0.5, 0.6667, 0.75, 0.8, 0.8333; divergent D. 0.5, 0.6667, 0.75, 0.8, 0.8333; convergent; 1
Use the preference table to answer the question.The preference table shows the results of an election among three candidates, A, B, and C. 
(a) Using the plurality method, who is the winner?(b) Is the majority criterion satisfied?
A. B; yes B. A; yes C. C; yes D. A; no
Solve the triangle.a = 8, b = 14, c = 16
A. A = 28°, B = 61°, C = 91° B. A = 30°, B = 61°, C = 89° C. A = 32°, B = 59°, C = 89° D. no triangle