Solve the absolute value inequality. Other than ?, use interval notation to express the solution set and graph the solution set on a number line.
< 8
A. (-?, -8] ? [8, ?)
B. [-8, 8]
C. (-?, -8) ? (8, ?)
D. (-8, 8)
Answer: D
Mathematics
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Find the particular solution to the given differential equation that satisfies the given conditions.4y''+ 7y' = 0; y = 0 when x = 0, and y= 3 when x = - 
A. y = - 
+ 
e(-7/4)x
B. y = 
- 
e(7/4)x
C. y = 
- 
e(-7/4)x
D. y = - 
+ 
e(7/4)x
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Use the substitution method to solve the system.x - 4y = -15x - 3y = -5
A. (0, -1) B. (1, -1) C. No solution D. (-1, 0)
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Use the commutative property of multiplication to write an equivalent algebraic expression.5 ? x
A. 5x
B. x + 5
C. 
D. x ? 5
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Solve the inequality and write the solution set using interval notation; then graph the solution set on a number line. v2 + 2v - 24 ? 0
A. [4, ?)
B. [-6, 4]
C. (-?, -6]
D. (-?, -6] ? [4, ?)
Mathematics