Paul is comparing the cost of cell phone services. At CellCoA, the phone he wants costs $305 and the unlimited calling plan costs $45 per month. At CellCoB, Paul can purchase the same phone for $350 and get an unlimited calling plan for $30 per month. In how many months will both plans cost the same? These equations, which are graphed below, represent the situation.

y = 45x + 305

y = 30x + 350

Here, x represents the number of months and y represents the amount paid.