Solve the following system by any appropriate method. If there is no real number solution, so state.
- 
= 1x + y = 7
A. (2, 4), (-16, 24)
B. (2, 3), (-16, 25)
C. (3, 10), (-17, -10)
D. (3, 4), (-17, 24)
Answer: D
Mathematics
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Find the domain and range of the inverse of the given function.f(x) = 
A. Domain and range: all real numbers B. Domain: [9, ?); range: [0, ?) C. Domain: [0, ?); range: [9, ?) D. Domain: all real numbers; range: [9, ?)
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Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
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Find the y-intercept of the polynomial function.f(x) = (x + 1)(x - 9)(x - 1)2
A. -1 B. -9 C. 9 D. 0
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Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
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