Solve the problem.Suppose that an open box is to be made from a square sheet of cardboard by cutting out 
squares from each corner as shown and then folding along the dotted lines. If the box is to have a volume of 243 cubic inches, find the original dimensions of the sheet of cardboard. 
A. 9
in. by 9
in.
B. 15 in. by 15 in.
C. 3 in. by 3
in.
D. 9 in. by 9 in.
Answer: B
Mathematics
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Multiply.(8 - 7i)(3 + 8i)
A. 80 - 43i B. -56i2 + 43i + 24 C. -32 - 85i D. 80 + 43i
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Rationalize the denominator. Assume all variables represent positive real numbers.
A. 
B. 
C. 
- 
D. 
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Solve the system by the substitution method.
A. 
B. 
C. 
D. 
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Find the opposite, or additive inverse.
A. - 
B. - 
C. 
D. 
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