Solve the problem.A square box with an open top is to be constructed from a rectangular piece of cardboard with side length 4 inches by cutting out equal squares of side length x at each corner and then folding up the sides. Write a completely factored polynomial whose values give the surface area of the box.
A. 4(2 + x)2
B. 4(2 - x)2
C. 8x(2 - x)
D. 8x(2 + x)
Answer: B
Mathematics
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(4y dx + 2y dy)C: The boundary of 0 ? x ? ?, 0 ? y ? sin x
A. -2 B. -4 C. 0 D. 4
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State the dimensions of the matrix.
A. 9 B. -5 C. 3 × 3 D. -5 × -5
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Find the values of the variables.
= 
A. a = 5, x = 1 B. a = 5, x = 5 C. a = 1, x = 1 D. a = 1, x = 5
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