Determine the domain of the function.f(x) = - 7x + 9
A. All real numbers
B. No solution
C. All real numbers except 
D. x ? 
Answer: A
Mathematics
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Find the center of the ellipse. 25(x - 6)2 + 9(y - 4)2 = 225
A. (-6, -4) B. (4, 6) C. (6, 4) D. (25, 9)
Mathematics
Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function decreases most rapidly.
A. - 
B. - 
C. - 
D. - 
Mathematics
Solve the equation.
= 0
A. 
B. 
C. {5, 2}
D. 
Mathematics
Find the quotient.
A. -25
B. -15
C. - 
D. 15
Mathematics