Find an equation for the ellipse described. Graph the equation.Center at (-2, 4); focus at (-6, 4); contains the point (-7, 4)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
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Solve the problem.Assume that the probability is 
that a child born is a boy. What is the probability that of the four children in a family two are girls and two are boys?
A. 
B. 
C. 
D. 
Graph the system of inequalities.2x + 3y ? 6 x - y ? 3 x ? 1
A. 
B. 
C. 
D. 
Decide whether the statement is true or false.
?
?
A. True B. False
Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers stand 50 inches apart. At a point between the towers and 12.5 inches along the road from the base of one tower, the cable is 1.56 inches above the roadway. Find the height of the towers.
A. 5.75 in. B. 8.25 in. C. 6.25 in. D. 6.75 in.