Connectivity dortmund scrubs i need an answer plz

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Aline passes through (1,-5) and(-3,7) write an equation for the line in point slope form rewrite the equation in slope intercept form

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9