Solve the problem.When a loan scheduled to run n payments is paid off k payments ahead of schedule, the amount of unearned interest u is given by u = f ? 
, where f is the total scheduled finance charge. The finance charge on a loan taken out by Edward is $499. If there were 24 equal monthly installments needed to repay the loan, and the loan is paid in full with 13 months remaining, find the amount of unearned interest. (Round your answer to the nearest cent.)
A. $151.36
B. $99.44
C. $141.02
D. $109.78
Answer: A
Mathematics
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A. 
B. -2
C. 2
D. - 
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Evaluate the double integral over the given region.
R = {(x, y): 0 ? x ? 1, 0 ? y ? 3}
A. 
ln 2
B. ln 2 ln 4
C. ln 8
D. 4 ln 2
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Find a formula for the inverse of the function described below.A size 58 dress in Country C is size 17 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = x + 12 B. f-1(x) = 2(x - 12) C. f-1(x) = 2(x + 12) D. f-1(x) = 2x + 12
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Solve the inequality and graph the solution set.
? 3
A. 
B. 
C. 
D. 
Mathematics