A computer technician charges a flat base fee plus an hourly rate for all repairs. Last year, she used the formula y=18x+22 to determine the cost in dollars, y, of a repair that required x hours of work. If she doubles her base fee this year, what equation should she use to determine the new cost of an x-hour repair? A. y=18x=22B. y=36x+22C. y=36x+44D. 2y=18x+22