Find the length of the parametric curve defined over the given interval.x = 4t, y = 
t 3/2, 0 ? t ? 9
A. 
B. 
C. 
D. 
Answer: A
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Use the information below to determine the cardinality of the set. U = {x | x ? N and x ? 12} A = {x | x ? N and 6 < x < 12} B = {x | x ? N and x is even and x < 12}n(A' ? B)
A. 8 B. 12 C. 9 D. 3
Identify the equation as a parabola, circle, ellipse, or hyperbola.x2 - 4y = 13
A. Hyperbola B. Parabola C. Ellipse D. Circle
Factor the sum or difference of cubes.2u3 - 54
A. 2(u + 3)(u2 - 3u + 9) B. (u + 3)(u2 - 3u - 9) C. (u - 3)(u2 + 3u + 9) D. 2(u - 3)(u2 + 3u + 9)
Find the numbers at which f is continuous. At which numbers is f discontinuous?f(x) = 
A. continuous for all real numbers B. continuous for all real numbers except x = 0, x = 5 C. continuous for all real numbers except x = 5 D. continuous for all real numbers except x = 6, x = 5