Describe the largest set S on which it is correct to say that f is continuous.f(x, y, z) = 
A. {(x, y, z): x2 + y2 ? 7}
B. {(x, y, z): x2 + y2 ? 49}
C. Entire plane
D. {(x, y, z): x2 + y2 ? 0}
Answer: A
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Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Divide the polynomial by the monomial.(28x3 + 8x2 + 24x) ÷ (4x)
A. 7x2 + 2x + 6 B. 7x4 + 2x3 + 6x2 C. 7x2 + 8x D. 31
Find the expression.u = -4i + 1j and v = 8i + 1j; Find 
.
A. 12
B. 
C. 2
D. 
Suppose a planet is discovered that revolves around its sun in an elliptical orbit with the sun at one focus. Its perihelion distance (minimum distance from the planet to the sun) is approximately  FIGURE 1.png)
km, and its aphelion distance (maximum distance from the planet to the sun) is approximately  Figure 2.png)
km. Approximate the eccentricity of the planet’s orbit. Round to three decimal places.
What will be an ideal response?