Express the number in terms of i.-
A. -7
i
B. 3
i
C. -3
i
D. -21i
Answer: C
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Provide an appropriate response. Given that sin 40° = 0.6428, which angle has the cosine value of 0.6428?
A. 130° B. 50° C. 40° D. 140°
Determine whether the system is consistent or inconsistent and whether the equations are dependent or independent.-6x + 2y = -226x + 5y = 92
A. Consistent; dependent B. Inconsistent; dependent C. Inconsistent; independent D. Consistent; independent
Determine where the function is increasing and where it is decreasing.f(x) = x2 - 10x
A. increasing on (-?, 5) decreasing on (5, ?) B. increasing on (-5, ?) decreasing on (-?, -5) C. increasing on (-?, -5) decreasing on (-5, ?) D. increasing on (5, ?) decreasing on (-?, 5)
Multiply or divide as indicated. Write the answer in lowest terms.
÷ 
A. 1
B. 
C. 
D. 