Solve the problem.The consumption of electricity can be modeled by C = Aert, where A is the current use, r is the rate at which the use is increasing, and t is the number of years. Suppose the consumption of electricity grows at 6.8% per year. Find the number of years before the use of electricity has tripled. Round the answer to the nearest hundredth.
A. 0.16 year
B. 1.62 years
C. 16.16 years
D. 44.12 years
Answer: C
Mathematics
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A. 12
B. 
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D. 35
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Find the vertex of the parabola.
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?
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A. 
B. 
C. 
D. 
E. 
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Solve the problem.The following prices per pound of ocean perch were found at seven supermarkets: $8.89, $9.79, $9.69, $9.89, 
$9.59, $8.69What is the median price per pound?
A. $9.89 B. $9.59 C. $9.69 D. $8.89
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Write the whole number in expanded form.8354
A. 8,354,000 B. 4000 + 500 + 30 + 8 C. 8000 + 300 + 50 + 4 D. 800 + 50 + 3
Mathematics