Solve the system.7x - 7y - z = -15 x - 3y + 9z = 1-3x + y + z = 1
A. (-1, 3, 2)
B. (1, 3, 1)
C. (1, 1, 3)
D. (-1, 1, 3)
Answer: B
Mathematics
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Perform the indicated operation.(9x - 5y)(9x + 5y)
A. 81x2 - 25y2 B. 81x2 + 90xy - 25y2 C. 81x2 + 25y2 D. 81x2 - 90xy - 25y2
Mathematics
Graph the linear inequality.x + 2y ? 1
A. 
B. 
C. 
D. 
Mathematics
Find the domain and range of the function.f(x) = 9 + 
A. D: [0,?), R: [9,?) B. D: (-?, ?), R: [9,?) C. D: [0,?), R: (-?, ?) D. D: (-?,0], R: (-?,9]
Mathematics
Provide an appropriate response.Use the FOIL method to find the product: (y - 2)(y - 5)
A. y2 + 7y + 10 B. y2 + 2y - 10 C. y2 - 7y + 10 D. y2 - 3y + 10
Mathematics