Match the correct function to the graph. 
A. y = -2x2 - 1
B. y = -2x2 + 1
C. y = -2x2
D. y = 1 - x2
Answer: B
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region enclosed by the parabolas y = - x2 + 32 and y = x2
A. 
= 0, 
= 
B. 
= 0, 
= 32
C. 
= 16, 
= 0
D. 
= 0, 
= 16
Mathematics
Find the slope of the line that passes through the given two points. If the slope is undefined, state this.(1, 4) and (13, 19)
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Jim has gotten scores of 98 and 70 on his first two tests. What score must he get on his third test to keep an average of 80 or better?
A. at least 82 B. at least 84 C. at least 72 D. at least 70
Mathematics
Simplify the expression.
?
?
A. - 6 B. 6 C. 4 D. 10 E. - 4
Mathematics