Collette and jakara went shopping at a local music store. the shop advertised that all cds marked with a red dot, r, were one price and all cds marked with a green dot, g, were another price. collette bought 2 green-dot cds and 4 red-dot cds for $52. jakara bought 3 red-dot cds and 1 green-dot cd for $34. write and solve a system of equations to determine how much the store charges for each green-dot and each red-dot cd.