Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.-2x2y7
A. Monomial; variables x, y; coefficient -2; degree 2
B. Monomial; variables x, y; coefficient -2; degree 7
C. Monomial; variables x, y; coefficient -2; degree 9
D. Not a monomial
Answer: C
Mathematics
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A. 
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