Perform the indicated clock arithmetic.(-3) ? (-7) (12-hr clock)
A. 12
B. Does not exist
C. 2
D. 0
Answer: C
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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 + 112x + 128 B. y = -16x2 + 56x + 128 C. y = -16x2 + 144x + 128 D. y = -16x2 + 16x + 128
Write the binomial expansion of the expression.(2x2 - y)5
A. - 32x10 + 80x8y - 80x6y2 + 40x4y3 - 10x2y4 + y5 B. 32x10 + 80x8y + 80x6y2 + 40x4y3 + 10x2y4 + y5 C. 32x10 - 80x8y + 80x6y2 - 40x4y3 + 10x2y4 - y5 D. 32x10 - 80x8y - 80x6y2 - 40x4y3 - 10x2y4 - y5
Find an equation for the ellipse.Center at (0, 0); focus at (-3, 0); vertex at (7, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Factor the polynomial completely.81x2 - 25
A. (9x + 5)2 B. (81x + 1)(x - 25) C. (9x + 5)(9x - 5) D. (9x - 5)2