Find the mean. Round to the nearest tenth unless otherwise stated.Retirement ages of teachers: 57, 64, 66, 53, 61, 58, 67, 55, 50
A. 58.4
B. 59.0
C. 57.7
D. 58.0
Answer: B
Mathematics
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Solve.The equation y = 0.003x - 0.20 can be used to determine the profit y, in dollars, of producing x items. How many items x must be produced so the profit will be at least $1012?
A. {x? x ? 336,400} B. {x? 0 < x ? 337,399} C. {x? x ? 337,400} D. {x? x ? 337,267}
Mathematics
Solve the problem.Radioactive carbon 11 has a half-life of 20 minutes. If there are 200 grams present at the start of our experiment, how many grams will remain after 10 minutes?
A. 50 g B. 141.421 g C. 6.931 g D. 100 g
Mathematics
Evaluate the absolute value expression.|-12.3|
A. -12.3 B. 0 C. 12.3 D. 24.6
Mathematics
Complete.34.87 mm = 
m
A. 34,870 B. 3487 C. 0.03487 D. 0.349
Mathematics