Multiply.(-5x - 11y)(-2x + 6y + 1)
A. 10x2 - 30xy - 5x - 66y2
B. 10x2 - 8xy - 8y2
C. 10x2 - 8xy - 5x - 66y2 - 11y
D. 10x2 + 22xy - 5x - 66y2 - 11y
Answer: C
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Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.sec 
= cos 
A. 0
B. 0, 
, ?, 
C. 
, 
, 
, 
, 
, 
, 
D. 
, 
Solve.(2x + 2)2 = 16
A. 1, 3 B. 1, -3 C. 0, 1 D. 9, -9
Solve the problem.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 21 yd long and touches the ground 17 yd from the pole. How tall is the pole? Round your answer to the nearest thousandth if necessary. 
17 yd
A. 12.329 yd B. 6.165 yd C. 19 yd D. 76 yd
Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = -5x2 - 10x
A. minimum at 
B. minimum at 
C. maximum at 
D. maximum at 