Mel wants to buy a pair of shoes that costs $120. She has saved $45 and has a job that pays her $10 per hour. The number of hours she has to work to have enough to buy the shoes is given by the inequality 10x + 45 > 120, where x is the number of hours she works. The fewest number of hours she has to work to buy the shoes is ___

Is it 7, 8 , 9 or 10