Factor completely.x4 - 81
A. (x2 - 9)(x2 + 9)
B. (x - 3)(x + 3)(x2 + 9)
C. (x - 3)2(x + 3)2
D. (x - 3)(x + 3)(x2 - 9)
Answer: B
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Use Identities to find the exact value.cos 36° cos 24° - sin 36° sin 24°
A. 1
B. 
C. 
D. 
Find the equation of the line through the given pair of points in standard form using only integers.(-4, -4) and (4, 3)
A. 7x - 8y = 12 B. 7x - 4y = 4 C. 7x - 8y = -16 D. 7x - 8y = 4
Write the number as a product of a real number and i. Simplify the radical expression.
A. -11i
B. 11i
C. 11
D. -11
Solve the problem.A lens can be used to create an image of an object on the opposite side of the lens, such as the image created on a movie screen. Every lens has a measurement called its focal length, f. The distance s1 of the object to the lens is related to the distance s2 of the lens to the image by the function s1 = 
.For a lens with f = 0.3 m, what are the asymptotes of this function?
What will be an ideal response?