Solve the problem.It takes a force of 
to compress a spring from its free height of 
. to its fully compressed height of 
. How much work does it take to compress the spring the first inch?
A. 1300 in ? lb
B. 130,000 in ? lb
C. 2600 in ? lb
D. 650 in ? lb
Answer: A
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Find the derivative of the function.y = log4 (3x2 - 2x)5/2
A. 
B. 
C. 
D. 
Graph the linear equation.y = ?4x - 3
A. 
B. 
C. 
D. 
Economists define the disposable annual income for an individual by the equation D = (1 - r)T, where T is the individual's total income and r is the net rate at which he or she is taxed. What is the disposable income for an individual whose income is $20,000 and whose net tax rate is 31%? ?
A. $6,200 B. $47,600 C. $20,000 D. $13,800 E. $33,800
Use the Midpoint Rule with n = 4 to approximate the area of the region bounded by the graph of 
and the x-axis over the interval 
. Round your answer to 4 decimal places.
?
A. 7.3013 B. 6.0475 C. 6.4900 D. 7.3750 E. 7.8913