Simplify the expression. Assume that all variables are positive.
? 
A. 
B. 
C. 45
D. 
Answer: A
Mathematics
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Express the sum using summation notation. Use a lower limit of summation not necessarily 1 and k for the index of summation.
+ 
+ 
+ 
+ . . . + 
A. 
B. 
C. 
D. 
Mathematics
Find the average of the set of numbers.7
and 23
A. 13
B. 27
C. 15
D. 31
Mathematics
Represent the shaded area in the figure group with a mixed number.
A. 3
B. 4
C. 1
D. 1
Mathematics
Simplify, then write in descending order.
x - 4x2 - 
x3 - 
x + 
x3
A. - 
x3 - 4x2 + 
x
B. 
x3 - 4x2 + 
x
C. - 
x3 - 4x2 - 
x
D. 
x3 - 4x2 - 
x
Mathematics