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 is 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. 63 watts
B. 147 watts
C. 126 watts
D. 21 watts
Answer: B
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Solve the problem.Find the image of rectangle ABCD for the size transformation with center O and scale factor 2/3.
A. 
B. 
C. 
D. 
Solve the problem.A rectangular swimming pool is being constructed, 18 feet long and 100 feet wide. The depth of the pool is measured at 3-foot intervals across the length of the pool. Estimate the volume of water in the pool using Simpson's Rule.
A. 10,200 ft3 B. 7700 ft3 C. 5800 ft3 D. 8700 ft3
Solve the problem.State College's women's basketball team had the following scores in their last 7 games: 85, 66, 74, 98, 54, 85, and 83. Find the mean of these scores.
A. 77.9 B. 74.5 C. 80.2 D. 85
Express the product as a sum or difference.sin 7x sin 4x
A. 
(cos 3x - cos 11x)
B. 
(cos 11x - cos 3x)
C. sin2 28x2
D. 
(sin 11x + cos 3x)