The graph of f(x) = ax2 + bx + c is given in the figure. Determine whether the discriminant is positive, negative, or zero.
A. Zero
B. Negative
C. Positive
Answer: A
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Determine if the given polar coordinates represent the same point.(8, ?/4), (8, 5?/4)
A. No B. Yes
Provide an appropriate response.It can be shown that a hyperbola with center at the origin, foci at F'(-c, 0) and F(c, 0), and equation 
has equation 
. Use this result to find an equation of a hyperbola with center at the origin, foci at (-4, 0) and (4, 0), and absolute value of the distances from any point of the hyperbola to the two foci equal to 4.
A. 
- 
= 1
B. x2 - y2 = 4
C. 
- 
= 1
D. 
- 
= 1
If the number is negative, write it with a raised negative sign; if the number is positive, write it in two ways.Joan lost 
pounds in one week when she started jogging every day.
A. 
pounds or 
pounds
B. 
pounds
C. 
pounds
D. 
pounds
Find the difference. Simplify the result.
- 
A. 
B. 
C. 
D. 