Simplify.
A. - 
B. - 
C. 
D. - 
Answer: B
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Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. ln 
+ C
B. ln 
+ C
C. ln 
+ C
D. ln 
+ C
Solve the equation.21s + 40 = -4s
A. - 
B. 
C. 
D. 
Solve the following problem in which a radical must be evaluated.If air resistance if ignored, the speed of a dropped object is given by s = 
, where s is the speed in feet per second and d is the distance in feet it has fallen. Approximate the speed of a dropped object after it has fallen 9 feet. Round to the nearest hundredth if necessary.
A. 24 ft/sec B. 14.7 ft/sec C. 1.27 ft/sec D. 192 ft/sec
Solve the problem.The difference between a country's exports and imports is called the country's trade balance. In 1997, a country had $71 billion in exports and $157 billion in imports. What was the country's trade balance in 1997?
A. -$86 billion B. -$228 billion C. $228 billion D. $86 billion