Solve.x3 - 8
A. 2, -3 ± i
B. -2, -1 ± i
C. -2, -1 ± 
D. 2, -1 ± i
Answer: D
Mathematics
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Find the angle between the pair of vectors to the nearest tenth of a degree.5i - 4j, 2i - 6j
A. 33.9° B. 110.2° C. 32.9° D. 60.4°
Mathematics
Solve the equation.2(1 + 2x) = 8
A. {2} B. {4} C. {-1} D. {1}
Mathematics
Graph 
between -2? and 2?, and then reflect the graph about the line y = x to obtain the graph of 
.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve the problem.The cost of manufacturing clocks is given by C(x) = 68 + 21x - x2. Also, it is known that in t hours the number of clocks that can be produced is given by x = 2t, where 
Express C as a function of t.
A. C(t) = 68 + 42t - 4t B. C(t) = 68 + 42t - 4t2 C. C(t) = 68 + 21t + t2 D. C(t) = 68 + 21t - 2
Mathematics