Perform the addition or subtraction.(x2 + 7x - 9) + (5x + 7)
A. 5x2 + 12x - 2
B. 10x2
C. x2 + 12x - 2
D. 5x2 + 7x - 2
Answer: C
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?Which of the following has a larger number of units for a given quantity?
A. ?inches vs. feet; inches has a larger number. Example: 29" = 1 '. B. ?inches vs. centimeters; inches has a larger number. Example: 2.54 inches = 1 centimeter. C. ?yards vs. meters; meters has a larger number. Example: 1.0933 yards = 1 meter. D. ?feet vs. meters; meters has a larger number. Example: 3.28 meters = 1 foot. E. ?gallons vs. liters; liters has a larger number. Example: 3.79 gallons = 1 liter.
Plot the point whose polar coordinates are given.(-4, 2?/3)
A. 
B. 
C. 
D. 
Evaluate.cos (cos-1 0.4)
A. 0.9 B. 2.7 C. 3.5 D. 0.4
Find the unit vector having the same direction as v.v = -5i
A. i
B. - 
i
C. -j
D. -i