Solve the equation. Use words or set notation to identify equations that have no solution, or equations that are true for all real numbers. 
x - 
x = 3
A. {
x is a real number}
B. ?
C. {-24}
D. {24}
Answer: C
Mathematics
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Find the solution set for each inequality. Graph the solution set on a number line and write it in interval notation.|x - 1| ? 0
A. (-?, 1)
B. ?
C. {1}
D. {-1}
Mathematics
Find the weighted mean. Round to the nearest tenth.
A. 27.3 B. 8.7 C. 25.3 D. 23.4
Mathematics
Find the domain of the function.s(t) = t2 + 1
A. {t|t > -1} B. {t|t ? -1} C. {t|t is any real number} D. {t|t ? -1}
Mathematics
Simplify each side of the equation, if possible. Then solve the equation.
k + 5k = 24 - 3 + 2
A. k = 29
B. k = 
C. k = 
D. k = 23
Mathematics