Match the graph to one of the listed functions.
A. f(x) = x2 + 2x
B. f(x) = x2 - 2x
C. f(x) = x2 - 2x - 1
D. f(x) = x2 + 2x - 1
Answer: A
Mathematics
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Solve the quadratic equation by completing the square.x2 + 10x + 15 = 0
A. {5 - 
, 5 + 
}
B. {-10 + 
}
C. {-5 - 
, -5 + 
}
D. {5 + 
}
Mathematics
Describe the given set of points with a single equation or with a pair of equations.The circle in which the plane through the point (5, 6, 9) perpendicular to the x-axis meets the sphere of radius 13 centered at the origin.
A. y 2 + z2 = 169 and x = 5 B. y 2 + z2 = 119 C. y 2 + z2 = 144 and x = 5 D. x2 + y 2 + z2 = 169
Mathematics
Find the solution to the system of equations by the substitution method. x - 4y = -52x - 3y = -10
A. (-4, -5) B. (-4, 0) C. (5, -1) D. (-5, 0)
Mathematics
Divide and, if possible, simplify.
÷ 
A. 
B. 
C. 
D. 
Mathematics