Factor completely. If the polynomial cannot be factored, write "prime."27x12 + 64y9
A. (3x4 + 4y3)(9x8 - 12x4y3 + 16y6)
B. (3x4 + 4y3)(9x8 + 12x4y3 + 16y6)
C. (3x4 - 4y3)( 3x4 + 4y3)
D. (3x4 - 4y3)(9x2 + 12x4y3 + 16y6b2)
Answer: A
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Replace the polar equation with an equivalent Cartesian equation.r2 sin 2? = 20
A. y = 
B. y = 20x2
C. y = 
D. y = 10x
Evaluate the integral by changing the order of integration in an appropriate way.
A. 5 ln 2 ln cos 6
B. - 
ln 2 ln cos 6
C. - 5 ln 2 ln cos 6
D. 
ln 2 ln cos 6
Find the book value after the given number of years, using the straight-line method. Round your answer to the nearest dollar.Find the book value at the end of the first year.Cost:$4,500Estimated life:6 yearsEstimated scrap value:$300
A. $700 B. $3,800 C. $3,750 D. $3,100
Identify the axis of symmetry of the parabola.y = 2x2 + 20x + 53
A. x = 5 B. x = -5 C. x = 3 D. x = -3