Find the equation in standard form of the parabola described.The vertex has coordinates (9, -3), and the focus has coordinates (9, -7).
A. (x - 9)2 = 16(y + 3)
B. (y - 3)2 = -8(x + 9)
C. (y - 3)2 = 8(x + 9)
D. (x - 9)2 = -16(y + 3)
Answer: D
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Solve.A window is in the shape of a square topped by a semicircle. The side of the square is x cm and the window cannot be wider than 160 cm. Find the function for the area of the window and the domain of the function.
A. A = x2 + 
?x2 : 0 < x ? 160
B. A = x2 + 
?
2 : 0 < x ? 1602 + 
?
2
C. A = 4x2 + 
?x2 : 0 < x ? 160
D. A = x2 + 
?
2 : 0 < x ? 160
Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards.In bridge, exactly 3 kings and exactly 3 queens
A. 0.00018 B. 0.00337 C. 0.00024 D. 0.00097
Find the derivative of the function.y = 
A. 
= 
+ 
- 
B. 
= 
+ 
- 
C. 
= -18x10 + 14x8 - 3x4
D. 
= 
+ 
+ 
Find the exact value. Do not use a calculator.cos 0
A. 1
B. 
C. 0
D. undefined