Find the domain of the expression.
A. {x
}
B. (-?, ?)
C. 
D. 
Answer: B
Mathematics
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Solve the problem. Round your result to an appropriate number of significant digits.A lake lies between A and C, and lines AB and DE run north-south. If 
and 
how far is it from A to C?
A. 9.8 mi B. 7.3 mi C. 10 mi D. 6.2 mi
Mathematics
Multiply and simplify.
? 108x
A. 
B. 
C. 6,804x
D. 
Mathematics
Add.
+ 
A. 1
B. 0
C. 
D. 
Mathematics
Differentiate implicitly to find d2y/dx2.x + xy + y = 2
A. 
B. 
C. 
D. 
Mathematics