Find the gradient vector for the scalar function. (That is, find the conservative vector field for the potential function.)
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A. ?
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B. ?
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C. ?
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D.
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E. ?
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Answer: D
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Perform the addition.5 + 2.12 + 0.674
A. 2.206 B. 6.446 C. 3.554 D. 7.794
If M is the theoretical maximum charge that a battery can hold and k is a positive constant that depends on the battery and the charger, the length of time (in minutes) required to charge the battery to a given level C is given by
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If 
, how long will it take a battery to reach a 70% charge? Assume that the battery was fully discharged when it began charging. Round your answer to the nearest tenths.
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A. 4.0 minutes
B. 2.7 minutes
C. 0.2 minutes
D. 9.3 minutes
E. 0.0 minutes
Translate the phrase into a mathematical expression. If needed, use x to represent "a number."Five times a number, subtracted from -9.
A. -9 - 5x B. 9 - 5x C. 5x - (-9) D. 5x - 9
Determine the vertex of the parabola.y = 
(x + 4)2 - 2
A. (2, 4) B. (4, -2) C. (-4, -2) D. (-2, -4)