Convert x - 5y = 55 to slope-intercept form.

2.30+0.4-0.88+1.33 can u explain the answer to this why the answer is 3.15

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

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?