Factor the polynomial completely.125a3 - 64b3
A. (125a - 4b)(a2 + 20ab + 16b2)
B. (5a - 4b)(25a2 + 16b2)
C. (5a + 4b2)(25a2 - 20ab + 16b2)
D. (5a - 4b)(25a2 + 20ab + 16b2)
Answer: D
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Find parametric equations for the line described below.The line through the point P(-1, 0, 1) and parallel to the line x = 4t + 1, 
A. x = 4t - 1, y = 4t, z = 2t + 1 B. x = 4 + 1, y = 4t, z = 2t - 1 C. x = -1, y = 2t, z = -4t + 1 D. x = 4t - 1, y = -4t, z = 1
Solve the problem.Linda needs to have her car towed. Little Town Auto charges a flat fee of $50 plus 
per mile towed. Write a function expressing Linda's towing cost, c, in terms of miles towed, x. Find the cost of having a car towed 5 miles.
A. c(x) = 3x; $15 B. c(x) = 3 + 50; $53 C. c(x) = 3x + 50; $65 D. c(x) = 3x + 50; $55
Solve the system by the elimination method. x - 5y = 20-7x - 4y = 16
A. {(1, -5)} B. {(0, -4)} C. ? D. {(4, 0)}
Respond to the question by using complete sentences.Let t be the number of years since 2017. What does t = 1 mean in this situation?
A. The statement t = 1 represents the year 2018. B. The statement t = -1 represents the year 2018. C. The statement t = -1 represents the year 2016. D. The statement t = 1 represents the year 2016.