Identify the type of surface represented by the given equation.
+ 
+ 
= 1
A. Sphere
B. Ellipsoid
C. Paraboloid
D. Elliptical cone
Answer: B
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Determine if the two lines are parallel, perpendicular, coinciding, or only intersecting.2x - 4y = 2y = 
x - 
A. coinciding B. intersecting C. perpendicular D. parallel
Determine the domain and the range of the function.f(x) = x2 + 12x
A. domain: {x|x ? -6} range: {y|y ? -36} B. domain: all real numbers range: {y|y ? 36} C. domain: {x|x ? 6} range: {y|y ? 36} D. domain: all real numbers range: {y|y ? -36}
A die is rolled twice. Write the indicated event in set notation.Both rolls are even.
A. {(2, 2), (2, 4), (2, 6), (4, 2), (4, 4), (4, 6), (6, 2), (6, 4), (6, 6)} B. {(2, 2), (4, 4), (6, 6)} C. {(2, 2), (2, 4), (2, 6)} D. {(2, 4), (2, 6), (4, 2), (4, 6), (6, 2), (6, 4)}
Solve the problem.The sales of a mature product (one which has passed its peak) will decline according to the function 
where t is time in years since the peak sales. Find the sales of a product 13 years after its peak sales if 
and 
A. 9687 B. 324,023 C. 59,788 D. 4844