The standard backward difference approximation of 
is
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. 
Answer: B
Mathematics
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Graph the function. State the domain and range.y = -2x2 + 20x - 55
A. 
Domain: ? Range: y ? - 5
B. 
Domain: ? Range: y ? - 5
C. 
Domain: ? Range: y ? - 5
D. 
Domain: ? Range: y ? - 5
Mathematics
Plot the point in the xy-plane. Tell in which quadrant or on what axis the point lies.(-6, 5) 
A. 
Quadrant I
B. 
Quadrant III
C. 
Quadrant II
D. 
Quadrant IV
Mathematics
Add or subtract as indicated.- 
- 
A. - 
B. - 
C. - 
D. - 
Mathematics
Simplify.(3a)4
A. 12a4 B. 81a C. 81a4 D. 12a
Mathematics