How many spools of thread did it take to the horns on max? the grinch used 27 feet in all and there were 108 in on each spool

What is this inequality notation? t is less then or equal to 2

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?

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?