Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 112 feet. The height of the arch 28 feet from the center is to be 6 feet. Find the height of the arch at its center.
A. 6.93 ft
B. 28.16 ft
C. 12 ft
D. 6.2 ft
Answer: A
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Evaluate the limit if one exists.
A. 9
B. Does not exist
C. 0
D. - 
Solve the equation. Use a calculator where appropriate. If the answer is irrational, round to the nearest hundredth.log (2 + x) - log (x - 3) = log 2
A. -8
B. 8
C. 
D. no solution
Provide an appropriate response.Describe the characteristics of an augmented matrix in triangular (or echelon) form.
A. The matrix has ones on the main diagonal and zeros below the main diagonal. B. The matrix has zeros on the main diagonal and ones below the main diagonal. C. The matrix has ones on the main diagonal and zeros everywhere else. D. The matrix has ones on the main diagonal and zeros above the main diagonal.
Provide the proper response.If two nonvertical lines have the same slope, they are 
.
Fill in the blank(s) with the appropriate word(s).