Express the number in scientific notation.0.0000004
A. 4 × 10-6
B. 4 × 10-8
C. 4 × 10-7
D. 4 × 10-9
Answer: C
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Translate the problem situation to a system of equations. Do not attempt to solve.The perimeter of a rectangular building is 246 feet. The width is 57 feet shorter than the length. What are the dimensions? (Let W represent the width and L represent the length.)
A. W = L + 57, 2L + 2W = 246 B. L = W - 57, 2L + W = 246 C. W = L - 57, 2L + 2W = 246 D. W = L - 57, L + W = 246
Solve the problem.A layer of paint on a piece of wood has a thickness of 
inch. The thickness of the piece of wood is 
inch. What is the total thickness of the wood and the paint?
A. 
inch
B. 3 inches
C. 
inch
D. 
inch
Graph the polynomial function.
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A. ?
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B. ?
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C. ?
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D. ?
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Solve the inequality. Express your answer using interval notation.|x - 7| ? 0
A. {-7} B. (-?, 7) C. {7} D. no solution