State whether the given pair of expressions are like terms. If they are like terms, add them.6x9, 7x9, -9x9
A. No
B. Yes; 4x9
C. Yes; 4x27
D. Yes; -378x9
Answer: B
Mathematics
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Round the number as requested.627 to the nearest hundred
A. 700 B. 500 C. 610 D. 600
Mathematics
Minimize the function
?
?
subject to the constraint 
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Perform the indicated operation and simplify. Assume all variables represent positive real numbers.
A. 
B. 
C. xyz
D. yz
Mathematics
Find the exact value of y, or state that y is undefined.y = tan-1 
A. - 
B. 
C. 
D. 
Mathematics