Solve the problem.An airplane is sighted at the same time by two ground observers who are 2 miles apart and both directly west of the airplane. They report the angles of elevation as 12° and 
How high is the airplane? Round to the nearest hundredth of a mile.
A. 0.95 mi
B. 0.42 mi
C. 0.72 mi
D. 1.64 mi
Answer: A
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Solve the problem.The total individual income tax collected by the tax collecting body of a country is a function of the number of people working, their income, and the tax rates. It has increased each year since 1992. The table below shows the individual income tax collected (in billions) for the time period between 1992 and 2017. Between 2002 and 2012, the average rate of change in the amount of tax collected is $24.9 billion per year. Interpret this average rate of change. 
A. Between 2002 and 2012, the amount of tax collected increased by $24.9 billion. B. Between 2002 and 2012, the amount of tax collected increased at a rate of $24.9 billion per year. C. Between 2002 and 2012, the amount of tax collected decreased at a rate of $24.9 billion per year. D. In each year between 2002 and 2012, the amount of tax collected increased by $24.9 billion.
Find the sum.
A. 1037.5 B. 1175 C. 1075 D. 1262.5
Simplify the root, if possible.
A. cannot be simplified
B. (3m + 2n)2
C. 3m + 2n
D. 
Given that the pair of triangles is similar, find the length of the side labeled n. Round your results to 1 decimal place, if necessary.
A. 6 B. 1.5 C. 0.6 D. 0.7