Solve the system, if possible.
a. x = –1, y = 12, z = –2
b. x = 5, y = –6, z = 2
c. x = –5, y = 6, z = –2
d. no solution; inconsistent system
b. x = 5, y = –6, z = 2
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Use factoring to solve the equation.12d2 + 38d + 30 = 0
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B. - 
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D. 
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Find the value of the unknown coordinate so that the distance between the points is as given.(1.5, 2) and (0, y); distance is 2.5
A. y = 0, y = -0.5 B. y = -0.5, y = 4.5 C. y = 0, y = 3.5 D. y = 0, y = 4
Graph the numbers on the real number line.x ? 0
A. 
B. 
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Write the quadratic equation in standard form. Determine the values of a, b, and c.-7 = -2x2 - 4x
A. 0 = 2x2 - 4x - 7 a = 2, b = -4, c = -7 B. -2x2 - 4x + 7 = 0 a = -2, b = -4, c = 7 C. -2x2 + 4x - 7 = 0 a = -2, b = 4, c = -7 D. 0 = -2x2 + 4x + 7 a = -2, b = 4, c = 7