Which sequence of transformations creates a similar, but congruent triangle?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

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?

Nine people are going to share a 128-ounces bottle of soda. how many ounces will each person get drink? choose the correct equation and answer for this situation