Suppose that y is directly proportional to x. Use the given information to find the constant of proportionality k. Then use y = kx to find y for the given value of x.y = 30 when x = 10;
Find y given x = 14.
A. k = - 3; y = - 42
B. k = 3; y = 42
C. k = 5; y = 70
D. k = 300; y = 
Answer: B
Mathematics
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Sketch the graph and show all local extrema and inflection points.y = x1/3(x2 - 252)
A. Min: (0,0)
No inflection points
B. Local max: (0,0), min: 
Inflection points: 
C. No extrema
Inflection point: (0,0)
D. Local max: 
, min: 
Inflection point: (0,0)
Mathematics
Find the unit vector having the same direction as v.v = -6i + 6j -3k
A. 
= - 
i + 
j - 
k
B. 
= - 
i + 
j - 
k
C. 
= - 
i + 
j - 
k
D. 
= 
i + 
j + 
k
Mathematics
Find the indicated sum or difference, if it is defined.
+ 
A. 
B. not defined
C. 
D. 
Mathematics
Provide an appropriate response.Which of the following is a vertical translation of the function 
A. y = 3[[x]] B. y = -[[x]] C. y = [[x - 3]] D. y = [[x]] - 3
Mathematics