The solution of the system of differential equations
?
is
Select the correct answer.
?
A. 
,
B. 
,
C. 
,
D. 
,
E. 
,
Answer: A
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Graph the equation.y2 + 14y = 12x - 13
A. 
B. 
C. 
D. 
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = ln (9x + 3y)
A. Domain: all points in the xy-plane satisfying 9x + 3y > 0; range: all real numbers; level curves: lines 
B. Domain: all points in the xy-plane satisfying 9x + 3y > 0; range: real numbers z ? 0; level curves: lines 
C. Domain: all points in the xy-plane satisfying 9x + 3y ? 0; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
Find the derivative of the function.y = 
A. - 
B. 
C. - 
D. - 
Provide an appropriate response.Jason designed a freestanding playpen for his young daughter in his backyard. How much fencing must he buy if the width is 18 feet and the length is 10 feet?
A. 46 feet B. 28 feet C. 180 feet D. 56 feet