maria received 2 dvds free when she joined an online dvd service. she has to buy 2 dvds per month after that. write an expression to find the total number of dvds per month after that. find the number of dvds she will have after 6 months.

maria received 2 dvds free when she joined an online dvd service she has to buy 2 dvds per month after that write an expression to find the total number of dvds class=