Evaluate the sum. Round to two decimal places, if necessary. 
A. 2
B. -18
C. 10
D. 18
Answer: A
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Solve the problem.You have 68 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area.
A. length: 34 ft, width: 34 ft B. length: 17 ft, width: 17 ft C. length: 51 ft, width: 17 ft D. length: 34 ft, width: 17 ft
Solve the problem.Find the foci and asymptotes of the following hyperbola:4y2 - 25x2 = 100
A. Foci: (
, 0), (-
, 0); Asymptotes: y = 
x, y = - 
x
B. Foci: (
, 0), (-
, 0); Asymptotes: y = 
x, y = - 
x
C. Foci: (0, 
), (0, -
); Asymptotes: y = 
x, y = - 
x
D. Foci: (0, 
), (0, -
); Asymptotes: y = 
x, y = - 
x
Find the area of the trapezoid.
A. A = 44.4 in.2 B. A = 95.4 in.2 C. A = 47.7 in.2 D. A = 62.9 in.2
Add.3 + (-14) + 8 + (-15) + 7 + (-17)
A. -16 B. -64 C. -28 D. -44