Solve the system of two equations in two variables.x + y = -3x - y = 17
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the oblique asymptote, if any, of the rational function.f(x) = 
A. x = y + 2 B. y = x - 5 C. None D. y = x + 5
Mathematics
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.63 ÷ (-9)
A. 8 B. -8 C. -7 D. 7
Mathematics
Decide whether or not the set is closed under addition.{2}
A. Not closed B. Closed
Mathematics
The function f(x) changes value when x changes from x0 to x0 + dx. Find the approximation error 
. Round your answer, if appropriate.f(x) = x3, x0 = 2, dx = 0.04
A. 0.004832 B. 0.009664 C. 0.019328 D. 0.014496
Mathematics