Express the vector as a product of its length and direction. -12i - 4j + 3k
A. 169
B. 13(-i - j + k)
C. 13
D. 
Answer: C
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If the function is one-to-one, list the inverse function by switching coordinates or inputs and outputs.f = {(6, -9), (8, -8), (6, -7), (4, -6)}
A. f-1 = {(-9, 6), (-8, 8), (-7, 6), (-6, 4)} B. not one-to-one C. f-1 = {(-8, -9), (-9, 6), (6, 8), (-8, -7)} D. f-1 = {(-8, -9), (-6, 6), (6, 6), (-8, -7)}
Factor out the GCF from the polynomial.5x4 + 11
A. 5
B. No common factor
C. 5(x4 + 11)
D. 5(x4 + 55)
Solve the problem.If the list price is $155.67 and the discount price is $99.74, how much is saved by buying at discount?
A. $56.93 B. $55.93 C. $65.93 D. $66.93
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs.Entering GPACurrent GPA 
A. y = 0.03x + 3.67 B. y = 0.33x + 2.51 C. y= 0.02x + 4.91 D. y = 0.50x + 5.81