Solve by the substitution method.8x + 17 = 7y5x - 3y = -12
A. (-3, -1)
B. (-4, 0)
C. (7, -12)
D. (-1, -3)
Answer: A
Mathematics
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A. -2x2 + 4x + 3
B. 
x2 - 
x + 
C. 2x - 5
D. 2x2 - 5x + 3
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Graph the system of inequalities, and find the coordinates of the vertices.x - 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
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Solve the inequality. Express the answer in interval notation.3x + 2 > 243
A. (3, ?) B. [3, ?) C. {7} D. (7, ?)
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Solve.Lucy borrows $5600 and agrees to pay it back in 4 years. If the simple interest rate is 3%, find the total amount she pays back.
A. $12,320 B. $6272 C. $672 D. $6720
Mathematics