How to write 75% as a fraction in simplest form

Which of the following is the formula for the sequence graphed below

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?

Select the graph of the solution. click until the correct graph appears. |x| = 3