Write the inequality using interval notation, and illustrate the inequality using the real number line.y < -4
A. (-?, -4)
B. (-?, -4]
C. [-?, -4)
D. [-?, -4]
Answer: A
Mathematics
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True or false?It is possible for one person's weight to be 400% more than another person's weight.
A. True B. False
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Determine whether the statement is true or false.Zero is always less than a positive number.
A. True B. False
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Simplify the fraction.
A. 10c2 B. -10c2 C. -3c2 D. 3c2
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A reflector for a satellite dish is parabolic in cross section, with the receiver at the focus F. The reflector is 3 ft deep and 40 ft wide from rim to rim (see the figure). How far is the receiver from the vertex of the parabolic reflector? 
?
?
Round to the nearest foot, if necessary. Enter your answer as a number without the units.
Fill in the blank(s) with the appropriate word(s).
Mathematics