Decide whether the relation defines a function.y = 
A. Function
B. Not a function
Answer: A
Mathematics
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Solve the equation.- 
x = -20
A. {25}
B. 
C. 
D. 
Mathematics
Graph the linear inequality.y ? 6
A. 
B. 
C. 
D. 
Mathematics
Write the equation of the quadratic function whose graph is a parabola containing the given points.An egg is thrown upward from the top of a 128-foot-high building. The ball is 224 feet above ground level after 1 second, and it reaches ground level in 8 seconds. The height above the ground is a quadratic function of the time after the ball is thrown. Write the equation of this function.
A. y = -16x2 + 56x + 128 B. y = -16x2 + 16x + 128 C. y = -16x2 + 112x + 128 D. y = -16x2 + 144x + 128
Mathematics
Simplify.(-3x)(3x4)3
A. -81x13 B. -81x7 C. -81x12 D. -9x13
Mathematics