Decide whether or not the ordered pair is a solution of the system.(3, -1)y = 8 - 3x 2x = 3 - 3y
A. Yes
B. No
Answer: A
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Use reduction formulas to evaluate the integral.
A. - 
cot3 4x + 
cot 4x + C
B. - 
cot3 4x - 
cot 4x + x + C
C. - 
cot2 4x + 
cot 4x - x + C
D. - 
cot3 4x + 
cot 4x + x + C
Translate to an equation and solve.82
% of what number is 124?
A. 150 B. 1500 C. 102.51 D. 15
Government economists of a developing country determined that the purchase of imported perfume is related to a proposed "luxury tax" by the formula 
, 
, where N(x) measures the percentage of normal consumption of perfume when a "luxury tax" of x% is imposed on it. Find the rate of change of N(x)
for a tax of 70%.
?
A. ?
B. ?
C. ?
D. 
Solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable. 9x - 6y - 8z = 5 2x + 8y + 5z = -1 18x - 12y - 16z = -9
A. {(2, 2, -1)}
B. ?
C. {(5, -1, -9)}
D. 