Can anyone help me solve this problem, please?! :))

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?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?