Find the value of df-1/dx at x = f(a).f(x) = x3 - 6x2 - 5, x ? 4, a = 2
A. -12
B. - 
C. - 
D. - 
Answer: B
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Find the exact value of the expression.sin-1 
A. 
B. 
C. 
D. ?
Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 12 feet by 22 feet and the area of the rug is 75 square feet, how wide will the border be?
A. 4.5 ft B. 5.5 ft C. 3.5 ft D. 6 ft
Convert the given i-system to an e-system using slack variables. Then construct a table of all basic solutions of the e-system. For each basic solution, indicated whether or not it is feasible. 3x1 + 8x2 ? 24x1, x2 ? 0
A. 3x1 + 8x2 + s1 = 24
Feasible: (A), (B), (C)
Not feasible: none
B. 3x1 + 8x2 + s1 = 24
Feasible: (A), (B), (C)
Not feasible: none
C. 3x1 + 8x2 + s1 ? 24
Feasible: (B), (C)
Not feasible: (A)
D. 3x1 + 8x2 + s1 = 24
Feasible: (A)
Not feasible: (B), (C)
In 2008, Yolanda paid $3,875 in Social Security tax. If the Social Security tax rate was 6.2% to the maximum income of $94,200 that year, what was Yolanda's taxable income?
A. $6,250 B. $38,750 C. $62,500 D. $66,375