Y= x2 +2x - 35 ,x and y intercept

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?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

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