Solve the equation.
= 0
A. {-9, 9}
B. {-9}
C. {9}
D. no real solution
Answer: C
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Use the Binomial Theorem to expand the binomial.(x- 5y)4
A. x4 - 20x3y + 150x2y2 + 20xy3 + 625y4 B. x4 - 5x3y + 150x2y2 - 250xy3 + 625y4 C. x4 + 4x3y + 6x2y2 + 4xy3 + y4 D. x4 - 20x3y + 150x2y2 - 500xy3 + 625y4
Find the derivative of y with respect to the independent variable.y = (cos ?)
A. -(cos ?)
-1 sin ?
B. 
(cos ?)
-1
C. -
(cos ?)
-1 sin ?
D. -
cos ? sin ?
Solve the problem.A ball is dropped from a height of 21 m and always rebounds 
of the height of the previous drop. How far does it travel (up and down) before coming to rest?
A. 126 m B. 42 m C. 105 m D. 63 m
Write the quadratic function in the standard form y = a(x - h)2 + k.y = x2 + 12x + 44
A. y = (x - 6)2 + 8 B. y = (x + 6)2 - 8 C. y = (x + 6)2 + 8 D. y = (x - 6)2 - 8