Determine the phase shift of the function.y = -2 sin 
A. 
units to the left
B. 
units to the right
C. -2 units down
D. -2 units up
Answer: B
Mathematics
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. Find the magnitude (length) of the vector: -4u.
A. -20
B. 100
C. -20
D. 20
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Find the derivative of y with respect to the independent variable.y = 2x
A. 2x ln 2 B. 2x ln x C. 2x D. x ln 2
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Find the exact number of days from the first date to the second. Assume that the second month is in the following year, and assume no leap years.August 15 to April 6
A. 233 days B. 265 days C. 234 days D. 134 days
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Multiply the expressions.(7x + 2y)(7x - 2y)
A. 49x2 + 28xy - 4y2 B. 49x2 - 4y2 C. 7x2 - 2y2 D. 49x2 - 28xy - 4y2
Mathematics