Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
?
B. 
?
C. 
?
D. 
?
Answer: D
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Factor.2x2 + 8x - 10
A. 2x(x + 4 - 5) B. 2(x2 + 8x - 10) C. 2(x2 + 6x - 8) D. 2(x2 + 4x - 5)
Solve.
= x + 2
A. 0
B. -1 ± 2
C. -1 - 2
D. -1 + 2
Evaluate the trigonometric function with the given value of ? by finding a coterminal angle in [0, 2?). Do not use a calculator.Find cos ?, ? = 
A. - 
B. - 
C. 
D. 
Solve the problem.A fire truck is en route to an address that is 6 blocks east and 11 blocks south of the fire station. Using the fire station as the pole and the east direction as the polar axis, express the fire truck's destination (i) in rectangular coordinates and (ii) in polar coordinates. Round the coordinates to the nearest hundredth. Express ? in degrees.
A. (i) (6, 11); (ii) (4.12, -61.39°) B. (i) (6, 11); (ii) (4.12, -28.61°) C. (i) (6, -11); (ii) (12.53, -61.39°) D. (i) (6, -11); (ii) (12.53, -28.61°)