Here are four numbers. their mean is four and their range is zero

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Multiplying an even number of negative numbers gives an answer that is choose from:

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?