Tanya paid $75 to join a summer gold program. the course where she plays charges $30 per round. since she is a student, she receives a $10 discount per round. if tanya spent $375, how many rounds of gold did tanya play?

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graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.