Multiply.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.From a thin piece of cardboard 30 in. by 30 in., square corners are cut out so that the sides can be folded up to make a box. What dimensions will yield a box of maximum volume? What is the maximum volume? Round to the nearest tenth, if necessary.
A. 20 in. × 20 in. × 10 in.; 4,000 in3 B. 10 in. × 10 in. × 10 in.; 1,000 in3 C. 20 in. × 20 in. × 5 in.; 2,000 in3 D. 15 in. × 15 in. × 7.5 in.; 1,687.5 in3
Solve.Find the volume generated by revolving the region bounded by y = 3csc x, y = 0, 
about the x-axis.
A. 18? B. 27? C. 6? D. 9?
Round the whole number to the given place value.91,089 to the nearest thousand
A. 91,000 B. 92,000 C. 91,100 D. 101,000
Perform the operations indicated.8 + (-9)
A. -1 B. 17 C. -17 D. 1