1) how many solutions does this system have? use substitution. y=2x+1 and 4x-2y=6 2) true or false. you cannot use substitution to solve a system that does not have a variable with coefficient of 1 and -1. 3) what is the solution of the system? use substitution. 7x-2y=1 and 2y=x-1

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.