Select the standard form of the equation of the parabola and determine the coordinates of the focus.
?
?
A. 
; Focus: 
B. 
; Focus: 
C. 
; Focus: 
D. 
; Focus: 
E. 
; Focus: 
Answer: A
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Provide an appropriate response.If a ? 0, 
is called the reciprocal of a. Use this definition to express the reciprocal of 
in the form 
Fill in the blank(s) with the appropriate word(s).
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 are both 16 inches tall and stand 80 inches apart. At some point along the road from the lowest point of the cable, the cable is 2.56 inches above the roadway. Find the distance between that point and the base of the nearest tower.
A. 24.2 in. B. 24 in. C. 15.8 in. D. 16.2 in.
Solve the equation.
x + 7 = 
x - 8
A. 
B. 
C. 
D. 
Provide an appropriate response.Solve the following system of equations by reduction.
What will be an ideal response?