Multiply and simplify.
? 
A. - 
B. 
C. 
D. -12
Answer: A
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Solve the problem.Find the equations of the tangent and normal lines to the parabola with vertex at (0, 0) and focus at (0, 2), at the point where 
A. Tangent: 8y + 2x + 1 = 0 Normal: 32y + 8x - 33 = 0 B. Tangent: 8y - 2x + 1 = 0 Normal: 8y + 32x - 33 = 0 C. Tangent: 2y - 8x + 1 = 0 Normal: 8y + 32x - 33 = 0 D. Tangent: 8y +2x + 1 = 0 Normal: 8y - 32x - 33 = 0
Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.6x6 - 6
A. 6(x6 - 1) B. 6(x3 - 1)(x3 + 1) C. (6x - 6)(x4 + x2 + 1) D. 6(x - 1)(x + 1)(x4 + x2 + 1)
Use the quotient rule to simplify the expression. Use positive exponents to write the answer.
A. 
B. 
C. - 
D. 
Solve the variation problem.The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 21 minutes requires 16.8 gallons of water. Find the amount of water used in a shower lasting 7 minutes.
A. 6.4 gallons B. 147 gallons C. 5.6 gallons D. 4.8 gallons