Solve the problem.The length a spring is stretched from its natural length with work, W
is given by L = 
where k is a constant for the given spring. If a certain spring has a constant of 54.9, and the spring is to be stretched 4.3 feet from its natural length, how much work will be necessary? Round to the nearest tenth of a foot-pound.
A. 56.9 foot-pounds
B. 1015.1 foot-pounds
C. 507.6 foot-pounds
D. 118 foot-pounds
Answer: C
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Add.-19 + (-5) + (-12) + (-16) + 11 + (-17)
A. -58 B. -32 C. -80 D. 4
Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
C. 
- 
+ 
D. 
+ 
+ 
Write a fraction and a percent for the shaded part of the figure.
A. 
or 10%
B. 
or 0.1%
C. 
or 1%
D. 
or 0.01%
The revenue from a manufacturing process (in millions of dollars per year) is projected to follow the model 
for 10 years. Over the same period of time, the cost (in millions of dollars per year) is projected to follow the model 
, where t is the time (in years). Approximate the profit over the 10-year period, beginning with t = 0.
Round your answer to two decimal places. ? A. $3,236.83 million B. $3,293.50 million C. $3,203.50 million D. $3,235.67 million E. $3,295.67 million