A car rental costs 20plus20 plus 20plus0.10 per mile. Cost yyy for xxx miles is:
y=20x+0.10y = 20x + 0.10y=20x+0.10
y=0.10x+20y = 0.10x + 20y=0.10x+20
y=20.10xy = 20.10xy=20.10x
y=20y = 20y=20