The expression represents the cost of Janelle’s cell phone bill, where m represents the number of minutes of use. 0 point 0 5 m plus 12 What is the constant in the expression?

A constant is a number in an expression that does not change when the variable changes. In 0.05m + 12, the term 0.05m depends on the number of minutes m, while 12 stays the same. Therefore, the constant is 12, choice B.

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