Solve the inequality.x2 - 2x ? 8
A. (-?, -2] or [4, ?)
B. [-2, 4]
C. [4, ?)
D. (-?, -2]
Answer: A
Mathematics
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Solve graphically. Round solutions to the nearest tenth.3x2 - 9x - 8 = 0; x between 3 and 4
A. 3.9 B. 3.7 C. 3.8 D. 3.6
Mathematics
Find the constant of proportionality k, and write the linear function relating the two variables.Suppose that y is directly proportional to x. When x = 12, then y = 2.
A. k = 10; y = x + 10
B. k = 
; y = 
x
C. k = 6; y = 6x
D. k = 
; y = 
x
Mathematics
Solve the problem.The area of a rectangle is x4 -16 and one of its side has length x2+4. Find the length of the other side.
A. x2 - 4 B. x2+16 C. x2 D. x2+4x
Mathematics
Provide the proper response.Explain why 
and - 
represent the same number.
What will be an ideal response?
Mathematics