Simplify the expression. Assume that all variables are positive when they appear.-
A. -2x18y6
B. 2x6y9
C. 2x6y6
D. 4x6y6
Answer: C
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Find the area of the region specified in polar coordinates.the smaller loop of the curve r = 5 + 10 sin ?
A. 
(2? + 3
)
B. 
(2? + 3
)
C. 
(2? - 3
)
D. 
(2? - 3
)
Find the length of the curve.The curve r = 9 sin3 
, 0 ? ? ? 
A. 
(5? - 8)
B. 
(5? - 9
)
C. 27(3
- ?)
D. 
(2? - 3
)
Graph the circle. State the center and radius of the circle.(x + 3)2 + (y - 6)2 = 4
A. center (-3, -6); r = 2
B. center (3, 6); r = 2
C. center (3, -6); r = 2
D. center (-3, 6); r = 2
Determine which of the following methods is the best choice for solving the given equation: factoring, using the principle of square roots or using the quadratic formula. Then, solve the equation.x2 + 10x - 24 = 0
A. Factoring; -12, 2
B. Square root principle or factoring; 12, 2
C. Quadratic formula; -2 ± i
D. Square root principle; -12 ± 2