Use the given vectors to find the indicated expression.v = -4i + 3j + 2k, u = -5i + 3j + 5kFind v × (-3u).
A. -33i - 30j - 21k
B. -27i - 30j - 9k
C. 27i + 30j + 9k
D. 9i + 2j + 3k
Answer: B
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Give a verbal representation of f(x).f(x) = 5x - 
A. Multiply the input x by 5 and then subtract 
to obtain the output y.
B. Divide the input x by 5 and then add 
to obtain the output y.
C. Divide the input x by 5 and then subtract 
to obtain the output y.
D. Multiply the input x by 5 and then add 
to obtain the output y.
Matching each numeral name in order to an object in a group.
Use a sum-to-product identity to rewrite the expression.cos (8t2) - cos (5t2)
A. -2cos (6.5t2) sin (1.5t2) B. -2sin (6.5t2) cos (1.5t2) C. -2sin (6.5t2) sin (1.5t2) D. -2cos (6.5t2) cos (1.5t2)
Multiply.(4x - 7)(x + 12)
A. 4x2 + 39x - 84 B. 4x2 + 41x - 84 C. 4x2 + 41x + 41 D. 4x2 - 84x + 41