Clear fractions then solve by substitution. 
x + y = 
+ 2y 5x - 4 + 
= -3 + 6x
A. 
B. ?
C. 
D. 
Answer: D
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Solve the problem.What domain D in space minimizes the value of the integral 
D
A. D = the boundary and interior of the sphere 
.
B. D = the boundary of the sphere 
.
C. No such maximum domain exists.
D. D = ?3
Solve the problem.A comet follows the hyperbolic path described by 
where x and y are in millions of miles. If the sun is the focus of the path, how close to the sun is the vertex of the path?
A. 12 million mi B. 3.2 million mi C. 3.7 million mi D. 0.3 million mi
Write the equation of the line passing through the given points. Write your answer in slope-intercept form.Passing through (7, 2) and (2, -5)
A. y = - 
x - 
B. y = 
x - 
C. y = 
x - 
D. y = - 
x - 
Solve the problem.The position of a particle at time t is given by s, where 
. Find the velocity 
A. ds/dt = 
B. ds/dt = 
C. ds/dt = 
D. ds/dt = 