Select the curve represented by the parametric equations.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: E
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Use trial and error to factor the trinomial, or state that the trinomial is prime.20x2 + 23x + 6
A. (4x - 3)(5x - 2) B. prime C. (20x + 3)(x + 2) D. (4x + 3)(5x + 2)
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curves 
and 
A. 
B. 
C. 
D. 
Solve. Round to the nearest hundredth, if necessary.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 245 seconds are required to make a 5-by-7 enlargement, find the time required for a 7-by-9 enlargement.
A. 378 sec B. 567 sec C. 441 sec D. 504 sec
Multiply by the appropriate value of 1 to build up the fraction to an equivalent fraction with the denominator shown. 
= 
A. 
B. 
C. 
D. 