​At Bike Shop X it costs $2.75 per hour plus a $2.00 deposit to rent a bike. At Bike Shop Z it cost $1.75 per hour plus a $7.00 deposit to rent a bike. The total cost ,c, of renting a bike for n hours can be represented by a system of equations. Write and solve a system of equations to find how many hours you have to rent the bike for the cost to be the same.