Determine the two equations necessary to graph the ellipse with a graphing calculator.
+ 
= 1
A. y = 
and y = -
B. y = 
and y = - 
C. y = 
and y = -
D. y = 
and y = - 
Answer: B
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Construct a truth table to determine when the lightbulb is on. That is, determine which switches must be open and which switches must be closed for the lightbulb to be on. 
A. The lightbulb will be on in all cases except when p, q, and r are all open.
B. The lightbulb will be on when p and r are closed and q is open.
C. The lightbulb will be on when p, q, and r are all closed.
D. The lightbulb will be on in all cases except when p and r are open and q is closed.
Provide an appropriate response.Write 
as a whole or mixed number.
A. 
B. 
C. 
D. 
Solve the problem.Find the centroid of the region enclosed between the cone with equation 
and the plane with equation 
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Solve the problem.Your company uses the quadratic model y = -11x2 + 350x to represent how many units (y) of a new product will be sold (x) weeks after its release. How many units can you expect to sell in week 24?
A. 14,736 units B. 8136 units C. 8664 units D. 2064 units