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 14° and 
How high is the airplane?
A. 1.3 mi
B. 0.75 mi
C. 0.48 mi
D. 2.02 mi
Answer: A
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Write a formula for the function described.Surveyors use the "link" as a unit of measure. Function i computes the number of inches in x links. (Hint: there are 7.92 inches in one link.)
A. i(x) = 7.92x
B. i(x) = x + 7.92
C. i(x) = 
D. i(x) = 
Provide an appropriate response.The three-part inequality a < x ? b means "a is less than x and x is less than or equal to b". Which of these inequalities is not satisfied by any real number x?(a) -5 < x ? -11(b) -8 < x ? -7(c) 0 < x ? 4(d)-2 < x ? 6
Fill in the blank(s) with the appropriate word(s).
Solve the equation. Give the solution to three decimal places.2x + 3 = 7x - 4
A. {3.873} B. {5.161} C. {3.737} D. {7.873}
Express the number in terms of i.
A. 
i
B. -
i
C. -4i
D. 4i