Margo can purchase tile at a store for $0.99 per tile and rent a tile saw for $24. At another store she can borrow the tile saw for free if she buys tiles there for $1.39 per tile. How many tiles must she buy for the cost to be the same at both stores? PLEASE HELP ME HOMEWORK DUE TONIGHT!!!

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?