What is the value of x given in the following image?

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?

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .