Identify the fraction as a proper fraction or an improper fraction.
A. Proper fraction
B. Improper fraction
Answer: B
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Find the equilibrium solution of the equation of change 
. Round your answer to two decimal places, if nessary.
?
A. 
B. 
C. 
D. 
Graph the function.If K square units is the area of a right triangle, 7.8 units is the length of the hypotenuse, and x is the radian measure of an acute angle, then 
. Sketch the portion of the graph which is appropriate to the application.
A. 
B. 
C. 
D. 
Use ?, ?, ?, or both ? and ? to make a true statement.? 
{5, 17, 24, 36}
A. ? B. ? C. ? and ? D. ?
Solve the problem.In a survey of 1000 Americans, 850 said that they own a cell phone. Assume that the survey was properly conducted and that the 1000 people surveyed represent an unbiased sample of the entire population. Compute a 95% confidence interval (expressed using percents) for this survey.
A. 84.8% to 85.2% B. 82.8% to 87.2% C. 84.08% to 85.02% D. 81.7% to 88.3% E. 83.9% to 86.1%