Solve the problem.The area of a rectangular piece of cardboard shown is 780 square inches. The cardboard is used to make an open box by cutting a 3-inch square from each corner and turning up the sides. If the box is to have a volume of 1386 cubic inches, find the dimensions of the cardboard that must be used.

A. 20 in. by 39 in.
B. 23 in. by 42 in.
C. 14 in. by 30 in.
D. 17 in. by 36 in.


Answer: A

Mathematics

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A. 25
B. 11
C. 5
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A. 3,980,000 B. 199 C. 398,000 D. 39,800

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Find the equation of the line through the given pair of points. Solve it for y if possible.(-6, 3), (-6, -3)

A. y = 3 B. y = -6 C. x = 3 D. x = -6

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Perform the indicated operation.(6n7 + 4n + 5n6) + (-8n6 + 9n7 - 7n)

A. 15n - 3n7 - 3n6 B. 15n7 - 3n6 - 3n C. 13n7 - 2n6 - 2n D. 9n14

Mathematics