Solve.Enrollment figures at a community college showed an increase from 40,673 credit hours in one year to 75,455 credit hours in the next. Round each number to the nearest thousand to estimate the increase.
A. 35,000 credit hours
B. 34,900 credit hours
C. 34,000 credit hours
D. 34,800 credit hours
Answer: C
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Solve.The power that a resistor must dissipate is jointly proportional to the square of the current flowing through the resistor and the resistance of the resistor. If a resistor needs to dissipate 
of power when 
of current are flowing through the resistor whose resistance is 
find the power that a resistor needs to dissipate when 
of
current are flowing through a resistor whose resistance is 
A. 12 watts
B. 18 watts
C. 6 watts
D. 30 watts
Graph the hyperbola.9x2 = 4y2 + 36
A. 
B. 
C. 
D. 
Write y as an affine combination of the other points listed.v1 = 
, v2 = 
, v3 = 
, y = 
A. y = 2v1 + 3v2 - 4v3 B. y = 7v1 + 3v2 - 4v3 C. y = -3v1 - 2v2 + 6v3 D. y = 3v1 - 4v2 + 2v3
Find the dot product v ? w.v = 2i + j - 2k and w = i + 2j - 2k
A. 8 B. -8 C. 4 D. 23