Solve the following equation.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: D
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Solve the problem.A curved bridge rises over a river, so that the two endpoints of the bridge are 140 yards apart horizontally. You walk across the bridge with a device to measure its length and discover that the walking distance is 142 yards. Approximately how high does the bridge rise above the horizontal?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A curved bridge rises over a canyon. The two endpoints of the bridge are one mile apart horizontally. The bridge rises to a height of 350 feet above the horizontal. Approximately what is the walking distance along the bridge, in feet?
Fill in the blank(s) with the appropriate word(s).
Find the domain of the rational function.f(x) = 
A. {x|x ? -2} B. {x|x is any real number} C. {x|x ? -2, 2} D. {x|x ? -7}
Perform the indicated operation. Write the result in the form a + bi.(6 + 4i) - (-3 + i)
A. 9 + 3i B. 9 - 3i C. -9 - 3i D. 3 + 5i