An escalator in a department store is to carry people a vertical distance of 25 feet between floors. How long is the escalator if it makes an angle of 30° with the ground?
?
A. 42 feet
B. 31 feet
C. 41 feet
D. 50 feet
E. 39 feet
Answer: D
Mathematics
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Solve. Graph the solution on a number line, and express it in interval notation.-3 ? 3 + 
x ? 4
A. -6 < x < 1, (-6, 1)
B. -12 < x < 2, (-12, 2)
C. -6 ? x ? 1, [-6, 1]
D. -12 ? x ? 2, [-12, 2]
Mathematics
Find the area of the specified region.Shared by the circles r = 4 and r = 8 cos ?
A. 
(2? + 3
)
B. 
(4? - 3
)
C. 
?
D. 8?
Mathematics
Provide an appropriate response.The graph of the solution to 
on the number line is
A. |x| < 8 B. |x| > 8 C. |x| ? 8 D. |x| ? 8
Mathematics
Use factoring techniques to solve the quadratic equation.2x2 - 7x = 6x2 + 5x
A. 
B. 
C. 
D. 
Mathematics