Amy has set aside $150 a month for her cell phone bill. the cost for a monthly cell phone plan is a $65 access fee plus $20 per gigabyte of data used. which expression represents the amount of money amy has left from her monthly budget after she pays her cell phone bill? 150+65+20g150+65+20g 150−(65+20x)150-(65+20x) 150−(−65−-20x (150+65)−20g(150+65)-20g