The libraries in four counties assess late fees for overdue videos by using linear functions. Each library charges a base amount plus a penalty for the number of weeks that the video is overdue. The equations that model the cost, y, in dollars for videos that are x weeks overdue are shown in the table.



Late Fee Equations
County library
Late fee function
Cumberland
y = x + one-half
Lincoln
y = x + 3
Ocean
y = StartFraction x Over 2 EndFraction + 3
Summit
y = 3 x + 1

Which two county libraries charge the same penalty per week?
Cumberland and Lincoln
Lincoln and Ocean
Lincoln and Summit
Ocean and Summit