A piece of tin, 
inches on a side, is to have four equal squares cut from its corners, as in the illustration. If the edges are then to be folded up to make a box with a floor area of 81 square inches, find the depth of the box.
?
?
A. 11 in
B. 13 in
C. 6 in
D. 12 in
E. 9 in
Answer: C
Mathematics
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A. -7 B. -6 C. 6 D. -5
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Write the mixed number as an improper fraction.5
A. 
B. 
C. 
D. 
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Solve.Fred has taken four exams so far in his Chemistry course. His scores are 86, 85, 76, and 92. What is the average of these scores?
A. 84.75 B. 87.75 C. 169.5 D. 80.75
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Find the first year's depreciation using the MACRS method of depreciation and the MACRS depreciation rates table. Round to the nearest dollar.MACRS Depreciation Rates 
Cost: $402,500Period: 27.5-year
A. $1,402,713 B. $15,094 C. $14,027 D. $14,611
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