Find the sum or difference, and write in lowest terms, if necessary.
+ 
A. 
B. - 
C. 0
D. 
Answer: C
Mathematics
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Perform the indicated operations. Write the result using a radical. Assume that all variables represent positive values.
? 
A. 
B. 
C. 
D. 
Mathematics
Consider a function 
. If the graph of 
is above the horizontal axis, what can be said about the graph of f?
?
A. The graph of f is above the horizontal axis. B. The graph of f is below the horizontal axis. C. The graph of f is increasing. D. The graph of f is a straight line.
Mathematics
Add or subtract. Express the answer as a mixed number.-6
+ 15
A. 8
B. 9
C. 8
D. 7
Mathematics
Simplify. Assume variables represent nonnegative values.
A. 5
B. 25
C. 5
D. 8
Mathematics