Solve the system of linear equations and check any solution algebraically.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Simplify the factorial expression.
A. 3! B. 1 C. (n + 2)! D. n + 3!
Mathematics
Find the domain of the rational expression.
A. {x|x is a real number and x ? 1 and x ? 2} B. {x|x is a real number and x ? 1} C. {x|x is a real number} D. {x|x is a real number and x ? 2}
Mathematics
Use the graph to determine if y is a function of x.
A. function B. not a function
Mathematics
Use an analytic method to solve the equation.
= 13
A. {168} B. {42} C. {-84} D. {84}
Mathematics