A piano instructor charges a base fee of $100. 00 per week to train plus $25. 00 per hour for each hour hired up to 4 hours. Students who want to become professional may book more hours. Hours exceeding 4 are charged at a rate of $50. 00 per hour.

Felipe is saving money for a class trip. he already has saved $ 2 5 0 $250 that he will put toward the trip. to save more money for the trip, felipe gets a job where each month he can add $ 3 5 0 $350 to his savings for the trip. let m m be the number of months that felipe has worked at his new job. if felipe needs to save $ 2 7 0 0 $2700 to go on the trip, which equation best models the situation?

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