Solve and graph the solution set on a number line.5(2x + 6) < 15x + 5 
A. (5, ?)
B. (-?, 5)
C. [5, ?)
D. (-?, 5]
Answer: A
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Find the unit tangent vector of the given curve.r(t) = 
(1 + t)3/2i + 
(1 - t)3/2j + 
tk
A. T(t) = 
i + 
j + 
k
B. T(t) = 
i - 
j + 
k
C. T(t) = 
i - 
j + 
k
D. T(t) = 
i - 
j + 
k
Solve the problem.A water noodle is formed from a cylinder of radius 6 and height 12 by drilling through the diameter of the cylinder with a drill bit of radius 1. Find the volume of the water noodle.
A. 12? B. 420? C. 210? D. 432?
Use the at least once rule to find the indicated probability.The probability that a certain region in Mexico will be hit by a hurricane in any given year is 0.07. What is the probability that the region will be hit by at least one hurricane in the next 6 years?
A. 0.647 B. 0.930 C. 0.353 D. 0.049
Factor completely.x2 + 24x + 144
A. (x + 12)2 B. (x + 12)(x - 12) C. (x - 12)2 D. Cannot be factored