Solve the problem.The orbit of a planet in a distant system is an ellipse with a sun at one focus. For x and y in millions of miles, the equation of the orbit is 
Find the smallest distance (the perigee) from the planet to the sun. (Use the fact that 
where 
) 
A. 74.3 million mi
B. 88.9 million mi
C. 74 million mi
D. 81.6 million mi
Answer: A
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Find the flux of the vector field F across the surface S in the indicated direction.F = 4xi + 4yj + 5k; S is "nose" of the paraboloid z = 4x2 + 4y2 cut by the plane z = 4; direction is away from the z-axis
A. - 21?
B. 
C. 21?
D. 11?
Graph the radical function. Compare the graph to that of the square root function or cube root function.f(x) = 
A. It looks like the graph of the cube root
function, but it is shifted 3 units down.
B. It looks like the graph of the cube root
function, but it is shifted 3 units up.
C. It looks like the graph of the cube root
function, but it is shifted 3 units to the left.
D. It looks like the graph of the cube root
function, but it is shifted 3 units to the right.
Write an equation in slope-intercept form for the line shown.
A. y = 
x - 3
B. y = 2x + 3
C. y = 
x + 3
D. y = 2x - 3
Factor out the greatest common factor.x2 + 9x
A. x2(1 + 9x) B. x(x2 + 9) C. x(x + 9) D. No common factor