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Identify the number of terms/variables or constant term

17. 2x + 10, how many terms used in the algebraic expression
•1
•2
•3

18. 2x + 10, what is the variable used?
•2x
•x
•10

19.) 3x + 2y -5, how many terms were used?
•1
•2
•3

20.) 3x + 2y -5, what is the constant term used?
•3
•2
•5