Determine whether the collection is well-defined.The collection of professional football players over the age of 37.
A. Well-defined
B. Not well-defined
Answer: A
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
A small country consists of four states (State 1, State 2, State 3, and State 4). The total population of the country is 400,000. The standard quotas are q1 = 179.8, q2 = 129.6, q3 = 79.2, and q4 = 11.4 respectively.Which of the following numbers can be used as a modified divisor under Adams's method?
A. 1005 B. 1004.5 C. 1003.5 D. 1004 E. none of these
Determine if the given function y = f(x) is a solution of the accompanying differential equation.Differential equation: 9xy' + 9y = cos xInitial condition: y(?) = 0Solution candidate: y = 
A. Yes B. No
Evaluate the series, if it converges.
A. Does not converge.
B. 
C. 
D. - 