Factor completely. If the polynomial cannot be factored, write "prime."8x2 - 8
A. (8x + 1)(x - 8)
B. (8x + 8)(x - 1)
C. 8(x - 1)2
D. 8(x + 1)(x - 1)
Answer: D
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Find the slope of the curve at the given point P and an equation of the tangent line at P.y = x3 - 5x, P(1, -4)
A. slope is 3; y = 3x - 7 B. slope is -2; y = -2x - 2 C. slope is -2; y = -2x D. slope is 3; y = 3x - 3
Simplify the expression.x - [9x - (x - 4)]
A. -9x - 4 B. -4x + 4 C. -7x - 4 D. -7x + 4
Solve the problem.The weight of a liquid varies directly as its volume V. If the weight of the liquid in a cubical container 5 cm on a side is 375 grams, find the weight of the liquid in a cubical container 4 cm on a side.
A. 12 grams B. 64 grams C. 44 grams D. 192 grams
Solve the problem.A rectangular field is to be enclosed on four sides with a fence. Fencing costs 
per foot for two opposite sides, and 
per foot for the other two sides. Find the dimensions of the field of area 
that would be the cheapest to enclose. Round to the nearest tenth.
A. 21.2 ft @ $3 by 42.4 ft @ $6 B. 42.4 ft @ $3 by 21.2 ft @ $6 C. 15 ft @ $3 by 60 ft @ $6 D. 60 ft @ $3 by 15 ft @ $6